A truck tool box is a lockable, weather-resistant storage chest that mounts across or alongside a pickup bed to keep tools, gear, and equipment away from rain, rust, and theft. For a full-size bed, that usually means a 69, 70, or 72 inch unit that spans rail to rail, or a chest-style box that sits in the back corner and leaves your flat deck open.
We compared 12 of the strongest boxes made for full-size beds, weighing fitment, material gauge, seal quality, weight, mounting method, and how honest the locking hardware is. Capacity alone does not decide the best truck tool boxes for full size beds. A box that is too tall costs you rear visibility, a box that is too heavy eats your payload, and a box with a shallow latch stops little more than curiosity.
The short version: the Buyers Products 6.3 cubic foot poly chest is the pick we would put in most beds, the UWS 69-inch crossover is the best true full-width box, and the ARKSEN 49-inch aluminum chest is the strongest value. We also cover side-mount swing cases, underbody steel, gull-wing lids, and a full bed-length drawer system, because the right answer changes completely with how you use your truck.
If you are still working out what fits, our broader truck bed toolbox guide covers the other mounting styles, and our truck bed tent roundup matters if you are building an overland setup where both share the same bed space.
Table of Contents
Top 3 Best Truck Tool Boxes for Full Size Beds in 2026
Buyers Products 6.3 cu ft Poly Chest
- High-density ribbed polyethylene
- Molded double-wall lid
- Lock-ready hasp
- Fits under a tonneau cover
Buyers Products 14x16x24 Underbody Box
- 14 gauge black steel
- Continuous hidden hinge
- Compression latch
- Underbody mounting
ARKSEN 49 Inch Aluminum Chest
- 180 liter capacity
- 26 pounds
- Keyed lock with two keys
- Diamond pattern aluminum
All 12 Full-Size Bed Tool Boxes at a Glance
| Product | Specifications | Action |
|---|---|---|
| Buyers Products 6.3 cu ft Poly Storage Chest |
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| Buyers Products 14x16x24 Underbody Steel Box |
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| ARKSEN 49 Inch Aluminum Tool Box |
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 UWS EC10473 69 Inch Crossover Tool Box |
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 Buyers Products 72 Inch Aluminum Topsider |
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 DECKED Truck Bed Storage System |
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 Aikosin 70 Inch Gull Wing Crossover |
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 FGJQEFG 39 Inch Aluminum Tool Box |
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 Confote 48 Inch Aluminum Tool Box |
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 FORWODE 48 Inch Aluminum Tool Chest |
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 YHTAUTO Swing Case Pair for Chevy and GMC |
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 VEVOR 39 Inch Aluminum Tool Box |
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1. Buyers Products 6.3 cu ft Poly Storage Chest: Best Overall
Buyers Products 1712240 All-Purpose Poly Storage Chest, 6.3 cu ft, Black
6.3 cu ft capacity
44 x 19 x 17.5 inch
28 pounds
Ribbed high-density polyethylene
Pros
- Thick rigid plastic resists flex and cracking
- Molded double-wall lid
- Corrosion proof with zero rust risk
- Easy to bolt to rails or a T-slot system
Cons
- No built-in lid stay or strut
- Hasp latches can be stiff to pop open
- Not waterproof without a cover above it
This is the box we keep coming back to. At 6.3 cubic feet and 44 inches long, it is the rare storage chest that fits cleanly between the wheel wells of a full-size bed and still tucks under a tonneau cover.
The plastic is the story. This is ribbed high-density polyethylene with a molded double-wall lid, and owners describe it as thick and rigid rather than the thin, flexing plastic in bargain chests. It will not rust, it will not dent from a dropped tool, and at 28 pounds you can reposition it alone.
The built-in zinc-plated hasp accepts a standard padlock, which beats a keyed latch because padlock blanks are available everywhere. A lost key becomes a two-minute fix rather than a call to the manufacturer.
Two upgrades almost everyone makes: add a gas strut so the lid stays open in wind, and run a bead of weatherstripping along the seam. Both are cheap, and together they turn a water-resistant chest into something close to sealed.
Who it suits best
This is the box for a full-size owner who carries tools but still needs the flat deck for a mower, plywood, or a dirt bike. It also suits anyone whose truck already has a cover, since 17.5 inches of height clears most low-profile and retractable covers.
Where it falls short
Organization is the weak point. It is one large cavity, and the most common complaint is exactly what you would expect, that you empty the whole thing to find one wrench. Dividers and bins are the first thing owners add.
The hasp also needs a little persuasion, and several buyers report needing a tool to pop it open. Plastic can soften in prolonged direct sun, so a covered bed is the better home for it year round.
2. Buyers Products 1703300 Underbody Steel Box: The One That Disappears
Buyers Products 1703300 Black Steel Underbody Truck Tool Box, 14x16x24 Inch
24 x 16 x 14 inch
14 gauge black steel
24 liter volume
Replaceable gasket system
Pros
- Rugged 14 gauge steel with powder coat
- Continuous hidden hinge and gaskets
- Stainless compression latch
- Aircraft-grade support cables
- Made in the USA
Cons
- Single compartment with no dividers
- Mounting brackets sold separately
- Heavier than aluminum alternatives
An underbody box solves a different problem. Mounted beneath a bed or a service body, it keeps tools out of sight and out of the weather without giving up a single inch of bed space, and it is the most-reviewed box in our group by a wide margin.
The construction is what you would hope for at this gauge: 14 gauge black steel with a corrosion-resistant powder coat, a continuous hidden hinge, replaceable gaskets, and aircraft-grade support cables on the drop door. Owners report the compression latch and door holding up through years of job-site abuse.
At 24 liters and 24 by 16 by 14 inches, this is a bolt-on or strap-on box rather than a bulk hauler. It is rated water resistant, which is the right claim for something mounted where road spray hits it directly.
Plan for a separate mounting step. The brackets are not included, so you either buy an underbody mount kit or fabricate your own crossmember. It mounts flat on a trailer deck or a rack just as easily.
Who it suits best
Anyone running a service body, a flatbed, or a fleet truck where bed space is already spoken for. It is also strong for a full-size truck carrying recovery gear, a first aid kit, and a jump pack, since none of that needs to live in the bed.
Where it falls short
Two real limitations. Mounting hardware is extra, so the true cost is higher than the box alone. And it is a single open compartment, so a tray or set of bins is the first thing you will want to add.
It is also the heavier option, and steel under a bed adds weight to a corner already carrying the load. If payload is tight, pair it with lighter boxes above the bed.
3. ARKSEN 49 Inch Aluminum Chest: Best Value
ARKSEN 49″ x 15″ x 15″ Truck Bed Tool Box, Heavy Duty Storage Chest, Black
180 liter capacity
48.42 x 15 x 15 inch
26 pounds
Keyed lock with two keys
Pros
- Only 26 pounds for 180 liters
- Waterproof overlapping lid design
- Two keys included
- Carry handles for job-site transport
- Four length options
Cons
- Key required for every open and close
- Proprietary key blanks are hard to duplicate
- Aluminum is not a theft resistant safe
At 48.4 inches long and 15 inches tall, this is the narrow chest most full-size owners buy first. It is 180 liters at 26 pounds, a better capacity-to-weight ratio than almost anything else here, and the 15 inch width leaves room to walk beside it in the bed.
Owners use it constantly as a trailer tongue box, a bumper box, and a general bed chest. The high-strength aluminum with a diamond pattern design holds its shape under load, and the polished surface resists corrosion better than powder-coated steel in wet climates.
Two details are worth calling out. The overlapping lid is a real waterproof and dustproof seal design rather than a lip that sheds water, and the carry handles make it genuinely portable, so two people can lift it into a bed.
The same model comes in 20, 30, 39, and 49 inch lengths in black and silver, so the sizing logic carries to a smaller trailer or hitch rack if you change vehicles.
Who it suits best
Short-bed and crew-cab owners who want volume without losing the whole width of the bed. At 15 inches wide it slots in beside a full-width crossover, in front of a wheel well, or across the tailgate area of an 8 foot bed.
It also suits anyone who moves the box between vehicles, since hitch racks, RVs, and trailers are all listed applications and 26 pounds is a one-person lift.
Where it falls short
The lock is the recurring complaint, and it deserves attention. The keyed latch means the key is in daily use, not occasional use, which turns a security feature into a daily annoyance for a lot of owners. Proprietary blanks also make duplicating a lost key harder than it should be.
Be realistic about the security level too. Thin aluminum is not a safe. It deters someone walking past, not someone who has decided to take it.
4. UWS EC10473 69 Inch Low-Profile Crossover: The Best True Full-Width Box
UWS EC10473 69-Inch Matte Black Heavy-Wall Aluminum Truck Tool Box with Low Profile, RigidCore Lid
8.4 cu ft capacity
77 x 24 x 17 inch
0.058 inch aluminum
58 pounds
Pros
- Foam filled RigidCore lid resists binding
- Low profile lid keeps rear visibility
- Heavy-wall welded aluminum tub
- Stainless paddle handles
- Tool tray and holders included
Cons
- Heaviest crossover here at 58 pounds
- Assembly required before mounting
- Single large compartment
A 69-inch crossover is the most full-size-specific box in this group, and the UWS EC10473 is the one we would put in a truck driven every day. It sits rail to rail, holds 8.4 cubic feet, and the 24 inch width is a genuinely full-width footprint on a half-ton bed.
Build quality is a clear step up. The tub is a one-piece weldment in 0.058 inch heavy-wall aluminum, roughly double the gauge on most imported boxes in this band. The patented RigidCore lid is filled with solid foam, and that is the detail that matters, because it resists binding through temperature swings instead of slowly seizing up.
The low-profile lid is a real driving benefit. Looking out the back window of a full-size truck is already awkward, and 17 inches is among the shorter full-width options, so you keep more of your rearward sightline than with a 20 inch chest.
It also arrives better equipped than most, with a tool tray, built-in screwdriver holders, pre-drilled mounting slots, and the hardware to bolt it down.
Who it suits best
Daily drivers and contractors who want tools off the bed floor without a chest blocking the load floor. It fits a 6.5 or 8 foot bed where you still need to haul sheet goods or a mower alongside it.
Owners in cold climates appreciate the foam-filled lid most, since a lid that stays rigid through freeze and thaw cycles is the difference between a box you use and a box you fight.
Where it falls short
Weight is the honest drawback. At 58 pounds it is the heaviest box in our lineup, and on a half-ton with a full bed of cargo that adds up against the payload rating on your door jamb.
It also needs basic assembly before mounting, and despite the included tray it is still one large compartment underneath. It is water resistant rather than sealed, too.
5. Buyers Products 72 Inch Aluminum Topsider: The Thickest Metal We Saw
Buyers Products 1701551 72 x 13 x 16 Inch Aluminum Topsider Tool Box
8.6 cu ft capacity
72 x 13 x 16 inch
0.100 inch aluminum
69 pounds
Pros
- 0.100 inch aluminum is roughly double the gauge
- No-drill J-hook mounting included
- Recessed drop doors with hidden hinges
- Die-cast compression latches
- Made in the USA
Cons
- Heaviest option in the group at 69 pounds
- Outside depth can run under nominal size
- Door weatherstrip needs careful seating
This is the 72-inch topsider, and the headline spec is the aluminum gauge: 0.100 inch thick diamond tread plate, roughly double what most competitors use. At 8.6 cubic feet it holds more than the UWS crossover while sitting only 16 inches tall.
Buyers single out the welds. The description of them as clean and the doors as solid, with no wobble, is the recurring theme, and several owners compare it favorably to lighter imported boxes they have owned. Locking die-cast compression latches squeeze replaceable door seals.
Mounting is a genuine advantage. The J-hook hardware and side-rail pads are included, so this is a true no-drill install and you can move the box to another full-size truck without touching the bed floor.
Two recessed drop doors span the width, so you open half the box instead of the whole lid, and continuous hidden hinges with aircraft-grade support cables keep the doors from sagging.
Who it suits best
Owners who load heavy tools and worry about prying. Thicker aluminum is the answer when a crowbar is a realistic tool, and the compression latches are a meaningful upgrade over a plain over-center latch.
It also suits anyone who expects to move the toolbox between trucks, since the J-hook system needs no drilling and seven sizes run up to 96 inches for fleet beds.
Where it falls short
At 69 pounds it is the heaviest box we tested, and that is a real consideration on a half-ton. If you tow or carry heavy cargo regularly, run the numbers on your payload sticker first.
Outside depth can measure slightly under the nominal 13 inches, which matters when fitting tight between a bed rail and a bed extender. The door weatherstripping is also finicky to seat, so allow ten minutes and a rubber mallet for installation.
6. DECKED Truck Bed Storage System: The Drawer System That Changes Bed Use
DECKED Truck Bed Storage System Includes System Accessories | Compatible with Ford F150 (2015-current) 6’6″
Full bed-length drawers
74 x 72 x 12 inch
2000 pound flat load deck
Guaranteed for life
Pros
- Highest satisfaction score in the group
- 2000 pound flat deck above the drawers
- Drawers roll out on the tailgate
- Recycled HDPE on a galvanized sub-frame
- Includes cases bins and dividers
Cons
- Fit limited to listed Ford bed configurations
- Keyed lock is an optional add-on
- Drawers take on some dust and mist
The DECKED system is the only true drawer option here, and it carries the highest satisfaction score of the twelve. The idea is simple: the drawers occupy the bed, and the flat deck above them is rated for 2000 pounds, so you still haul a mower or a stack of pavers with your tools stored underneath.
This listing is fitted to the Ford F-150 from 2015 onward with a 6 foot 6 inch bed. It measures 74 by 72 by 12 inches, and the tub is recycled HDPE co-molded to a galvanized steel sub-frame, which is where the deck rating comes from.
The accessory bundle is unusually complete: a D-co case, a half-rack, a drawer organizer bin, two drawer dividers, two shallow and two deep stash bins, four D-ring tie-downs, and a funnel. That is far more than a bare box.
Sealing is good enough for automatic car washes, according to owners, with updated drawer seals and closeout panels that limit dust and mist. Drawers roll out on the tailgate, so you get full access without crawling into the bed.
Who it suits best
Contractors and mobile technicians who carry a lot of small, organized items and want to see them. Six compartments with dividers and bins is a real step up from digging through a single cavity, and the flat deck above means hauling capacity is not sacrificed.
It is also made in the USA from recycled HDPE and carries a lifetime guarantee, the strongest warranty position in this roundup. If the organized load also includes a camera body and lenses, our full-frame mirrorless camera roundup covers that side of the kit.
Where it falls short
Fitment is the big one. This is a vehicle-specific system, not a universal crossover, so it only suits the listed Ford bed configuration, and owners who swap trucks regularly find that a problem.
The keyed lock is an optional accessory and not included, so out of the box the drawers secure via the tailgate. The drawers are weatherproof rather than airtight, so expect a little dust after a wet winter.
7. Aikosin 70 Inch Gull Wing Crossover: Half the Box, Opened in a Second
Aikosin 70 Inch Truck Tool Box Gull Wing Crossover Aluminum Black Pickup Truck Bed Storage, Waterproof Side Truck Box with Lock and Key for RVs, ATVs, Trailer & Truck (70″x20″x13″)
70 x 20 x 13 inch footprint
Dual gull wing lids
Diamond plate aluminum
Lock and keys included
Pros
- Open only half the box for quick access
- Low 13 inch profile fits full-size beds
- Overlapping lid sheds water
- Works on RVs bumpers and hitch racks
Cons
- Thin gauge aluminum dents easily
- Weatherstripping is thin and can rattle
- Lock is a casual deterrent only
The gull wing layout is the idea worth stealing. Instead of one lid there are two hinged from the center, so you pop open just the half you need. For anyone who does not want to clear out the whole toolbox to find a single wrench, that beats any amount of extra capacity.
At 70 by 20 by 13 inches the footprint is built for a full-size bed. Thirteen inches is genuinely low profile, so it clears many tonneau covers and does not eat your rearward visibility. The tub is a one-piece heavy-duty diamond plate aluminum weldment with a double V-pan lid stiffener.
Owners report that the box locks well and looks clean in the bed, and that corner and bottom damage in transit is uncommon. Several use it as a trailer or RV battery box, and it vents and mounts on RVs, bumpers, hitch racks, and trailers.
The overlapping lid sheds water rather than pooling it, and the 5-bar tread pattern reads as a deliberate finish rather than a bare sheet.
Who it suits best
Anyone who grabs tools constantly rather than loading once a day. Mechanics, electricians, and service techs benefit most, because the whole point of a truck box is access speed.
It also suits a full-size bed with partial cover coverage, since 13 inches of height leaves room under most soft covers and low rails.
Where it falls short
The aluminum is thin gauge, and thin-gauge aluminum dents. Load sockets and cast iron into it and expect cosmetic damage that will not affect function but will bother you.
Weatherstripping under the lids is also thin and can rattle on rough roads, and the lock is more of a casual deterrent than real security. The finish chips with wear.
8. FGJQEFG 39 Inch Aluminum Box: The Trailer Tongue and Small Bed Favourite
FGJQEFG 39 Inch Aluminum Heavy Duty Truck Bed Tool Box Black (39″X13″X10″)
39.3 x 13.3 x 10.3 inch
19 pounds
Powder-coated aluminum
Keyed lock with two keys
Pros
- Doubled over edges add real stiffness
- Only 19 pounds so payload stays intact
- Overlapping lid with a seal ring
- Metal corner protectors included in the box
Cons
- Latch can be operated without the key
- Latch and handles can rust
- No lid strut only a chain
When readers ask what a truck tool box for a full size bed looks like at the budget end, this is the honest answer: 39.3 by 13.3 by 10.3 inches, 19 pounds, and no wasted space. The lift-off lid opens the whole box, and at just over 10 inches tall it disappears under a retractable cover.
What separates it from cheaper boxes of the same size is the metal. Buyers comparing it against budget alternatives point to thicker aluminum with edges doubled over for stiffness, which is exactly where thin-sheet boxes crack first. It is powder-coated black aluminum with a 5-bar tread pattern.
It is also genuinely portable. Hitch racks, camper cargo racks, enclosed trailer tongues, and RV rear mounts are all listed uses, and at 19 pounds you can lift it into a trailer bed by yourself without touching your truck payload.
A nice touch: metal corner protectors are included in the box, so the corners that take the most abuse in transit get reinforced first.
Who it suits best
Trailer owners, UTV and RV owners, and anyone with a shorter bed who wants a sealed box that does not eat the whole floor. The seal ring on the overlapping lid helps with rain and dust, and the low profile keeps it out of sight.
It is also the pick for people who are strict about weight. Nineteen pounds is close to nothing against a payload rating.
Where it falls short
The lock does not do what you expect. Owners report that the latch can be operated without the key even when the lock is engaged, so treat it as a visual deterrent rather than a security feature. That is the most important thing to know before buying.
Latch hardware and side handles can start rusting within months in a wet environment, and there is no lid strut, only a chain, to hold the lid open while you dig.
9. Confote 48 Inch Aluminum Box: Best for Salt Air and Coastal Work
confote 48 Inch Heavy Duty Aluminum Stripes Plated Tool Box Pick Up Truck Bed RV Trailer Toolbox Square Storage Organizer with Side Handle, Lock and Keys, Waterproof -48″x 19.5″x 17.5″，Black
9.47 cu ft capacity
48 x 19.5 x 17.5 inch
41.1 pounds
Stainless latch with rubber seal
Pros
- Aluminum shrugs off salt air and coastal exposure
- Gas strut lift arms on the drop door
- Good corner protection and packaging
- Roomy enough for batteries and gas bottles
Cons
- Some hardware rusts within about a year
- Lock cannot rest in the latched position
- Light for its size
At 9.47 cubic feet this is one of the larger chests we tested, and it earns a place on material. Aluminum with a striped tread simply does not corrode the way powder-coated steel does, and buyers in coastal areas call this out as the reason the box still looks right after a few seasons.
The 19.5 inch width is the widest of the portable aluminum chests here, which makes it useful for gear rather than hand tools. Owners mention fitting batteries, a gas bottle, and other equipment, and the interior gas-strut lift arms mean the drop door opens easily one-handed.
The stainless steel latch and rubber weather guard seal give it a better water story than most in this class, and corner protection plus packaging mean fewer arrive with crushed corners. It works on a hitch rack or enclosed trailer tongue as much as in a truck bed.
The same family comes in sizes from 20 by 12 by 9.5 inches up to 48 by 24 by 24 inches, so the sizing logic is consistent if you move up later.
Who it suits best
Coastal, marine, and salty-road drivers, plus anyone storing batteries or fuel-adjacent gear. Aluminum is the right call when corrosion matters more than dent resistance.
It is also strong for a full-size truck with a short bed, where a 48 inch chest in the back corner leaves a usable 8 foot bed in front of it, and for enclosed trailer tongue boxes.
Where it falls short
The lock is the main gripe, and it is a specific design choice: it cannot rest in the unlocked-but-latched position. That means the key is in your hand every time you open it, or the lid is unlocked and the box is not secured.
A minority of owners also report rust on steel hardware within about a year, and some find the box light for its volume. Aluminum walls are not thick-walled at this price point.
10. FORWODE 48 Inch Aluminum Chest: Best One-Handed Open
FORWODE 48 Inch Aluminum Truck Tool Box Lockable Truck Bed Tool Box Waterproof Truck Bed Storage Box with Gas Struts & Side Handle Truck Tool Chest for Pickup, Truck Bed, RV, Trailer & Garage (Silver)
48 x 15 x 15 inch
Diamond plate aluminum
Integrated gas strut
Keyed lock with two keys
Pros
- Gas strut opens smoothly with one hand
- Tight latch design holds on bumpy roads
- Light powder-coated aluminum
- Foldable side handles for installation
Cons
- Key required for everyday opening and closing
- Water resistant rather than fully waterproof
This is the box where the lid matters most. The integrated gas strut gives dampened one-handed opening and stops the lid slamming on the metal body, which is invisible in a spec sheet and obvious the first time you use it in gloves.
At 48 by 15 by 15 inches it is the same footprint as the ARKSEN, so it drops into the same spot in a full-size bed, but the diamond plate aluminum with a powder-coated rust-proof finish gives it a different character. It is built for beds, hitch brackets, and shelving.
The anti-pry tight-latch design resists a lever slipped into the gap, and the overlapping lid is what keeps water off your tools on rough roads. Foldable side handles mean one person can lift and position it.
Two keys are included, and eight size and color variants run from 20 by 12 by 9.6 inches up to 48 by 15 by 15 inches, so the same design covers a small trailer box through a full bed chest.
Who it suits best
Anyone who opens the box dozens of times a day and wants a clean one-handed action. Electricians, plumbers, and HVAC techs get more out of the gas strut than anyone else.
It is a good match for a full-size bed that already has a cover, since 15 inches of height is among the more compatible profiles for retractable covers and low rails.
Where it falls short
Same lock complaint as most keyed boxes in this class: the key is required for everyday opening and closing, so it becomes a daily friction point rather than an occasional security feature.
It is listed as water resistant, not waterproof, which is the honest description for a lapped lid with no full perimeter gasket. In sustained rain, add weatherstripping yourself or use a cover.
11. YHTAUTO Swing Case Pair: The Side Mount That Frees the Deck
YHTAUTO Driver & Passenger Side Truck Bed Storage Tool Box for Chevy, GMC
Driver and passenger side pair
ABS composite body
36.22 x 10.04 x 15.55 inch
Swing-out over the tailgate
Pros
- Uses dead space along the bed rails
- Swings nearly 180 degrees for tailgate access
- Removable internal tray for small items
- Will not rust
- Works with most tonneau covers
Cons
- Plastic pivot hardware can loosen or fail
- Top seal is weak in heavy rain
- Fit limited to Chevrolet and GMC body styles
A swing case solves the flat deck problem better than anything else here. These mount along the inside of the bed rails, occupying space that was previously unusable, and the whole unit swings out over a lowered tailgate for access at the height you are standing at.
This pair fits Chevrolet and GMC Silverado and Sierra 1500 through 3500HD, 2007 to 2019 new body style, plus listed 2019 LD and Limited trims, and it mounts without bed rail storage. That last point matters, because many side boxes require a rail package not every truck has.
The swing arc is close to 180 degrees, the difference between reaching in at an angle and having the box fully presented. Each unit is lockable and has a removable internal tray for small items that would otherwise fall to the bottom.
The body is ABS composite, so it will not rust and is unaffected by wind, rain, dust, or sun the way a painted steel box is. Assembly is required and eyelet mounting hardware is included.
Who it suits best
Full-size Chevrolet and GMC owners who haul a lot of wide or flat cargo. Loading plywood, sheet material, a mower, or an ATV stays simple because you are not fighting a 200 pound chest in the middle of the bed.
It also pairs well with a tonneau cover, since the low side profile clears most covers and keeps everything under one lid. If the kit you are hauling includes a helmet or a full-face rig, our full-face helmet roundup is worth a look.
Where it falls short
Durability of the plastic pivot hardware is the honest concern. Owners report that mounting screws and the plastic pivot rails can loosen or fail in use, and the supplied self-drilling screws are mediocre and can break during installation. This is not a permanent mount the way a bolted crossover is.
Water intrusion is also reported because the top seal is weak next to a gasket-sealed crossover. And the listed 75 pound static load rating is well above what these boxes carry in real use, so do not plan to store heavy batteries in them.
12. VEVOR 39 Inch Aluminum Box: The Lowest Profile Option
VEVOR Heavy Duty Aluminum Truck Bed Tool Box, Diamond Plate Tool Box with Side Handle and Lock Keys, Storage Tool Box Chest Box Organizer for Pickup, Truck Bed, RV, Trailer, 39″x13″x10″, Black
39 x 13 x 10 inch
83 liter capacity
17.4 pounds
Gas strut lid with two keys
Pros
- Lowest 10 inch profile in the group
- Gas strut opens to about 110 degrees
- Stainless locking mechanism with two keys
- Easy to reposition at 17.4 pounds
Cons
- Thin aluminum dents and will not take abuse
- Side handles are weak when loaded
- Latch can pop open over rough roads
We are including the lowest rated of our group because the size is genuinely useful. At 39 by 13 by 10 inches and 17.4 pounds, it is the box for someone with a very low bed cover, a short bed, or a trailer where every inch of clearance counts. It is also the easiest to reposition single-handed.
The lid is a gas strut that opens to roughly 110 degrees, enough to get your hands in without holding it, and the overhanging door lip is designed for a tighter seal than a flat lid. The locking mechanism is stainless steel and two keys are included.
Where the reviews split is on material honesty. Buyers like the size, the value, and the strut lid. A steady stream complains that the thin aluminum dents, that the latch pops open over rough roads even when locked, and that there is no real gasket despite the waterproof claim on the listing.
Some units arrive with bottom dents from handling, and the advertised external height can run a couple of inches under the listed size, which matters if you are fitting under a rail.
Who it suits best
Owners with a low-profile or retractable cover who need a box that genuinely clears it, and anyone who wants a sealed box on a hitch rack or trailer tongue where 17 pounds is the deciding factor.
It also works for a service truck where tools are accessed from outside the vehicle rather than from inside the bed.
Where it falls short
The aluminum is thin. It dents, and the side carry handles are the first thing to fail when the box is loaded, which is a safety issue rather than a cosmetic one. If you routinely drop cast iron or lug wrenches into the box, this is the wrong tool.
Latch behavior over rough roads is a genuine reliability complaint, not a nitpick. If the box holds anything you cannot afford to lose, spend up on a thicker tub with compression latches instead.
How to Measure a Full-Size Bed for a Toolbox
Full-size beds are not one size, which is why fitment confusion is the most common complaint we saw from owners. Half-ton trucks land in a 69 to 72 inch rail-to-rail band, and the number a box is sold as is often its length, not the opening it needs.
Step one: measure between the inside faces of your bed rails at the narrowest point, typically just behind the wheel wells. That is the number a full-width crossover has to clear, and 69 inches is the safe general choice for a half-ton bed.
Step two: measure rail to rail at the front of the bed where the box will sit, and write down the smallest number you get. Beds are not perfectly straight, and a box that measures correctly at the tailgate can be a quarter inch too tight at the bulkhead.
Step three: check bed length against box length. A 72 inch box against the bulkhead in a 6.5 foot bed leaves roughly 6 feet of usable deck behind it, and about 7.5 feet in an 8 foot bed.
Step four: add the box height to the distance from bed floor to rail top, and compare that with your cover’s lowest clearance point. Low-profile and swing case options are the ones that clear a tight cover.
Finally, confirm whether your truck has bed rail storage. Many side-mount and swing case boxes require rail storage, and without it the mounting hardware will not line up.
The Toolbox Types That Work in a Full-Size Bed
A crossover toolbox spans the full bed width, usually against the front bulkhead. It has the highest security of any type because the contents are enclosed and hidden from view, and it is the most common choice on full-size trucks. The cost is bed length, since it occupies the front entirely.
A saddle box is a low-profile crossover with a sloped or tapered lid, designed to preserve rearward visibility out the back window. It usually holds a little less and gives up some capacity for the sightline.
A side mount box installs along the inside of the bed rail, often swinging out over a lowered tailgate. This is the type that preserves your flat deck, and it is the best answer for owners hauling wide cargo. A swing case is the wheel-well-mounted cousin of the same idea.
A chest-style box is a portable rectangular box that can sit in the bed, on a trailer tongue, on a hitch rack, or behind a bumper. It gives up the security of a mounted crossover for total flexibility, which is why several boxes here are sold for multiple applications.
A bed drawer system occupies the bed floor with drawers and puts a flat load deck above them. It offers the highest organization and the highest commitment, and it is vehicle-specific. A low-profile toolbox is simply a shallower box, usually under 14 inches, so it clears covers and sightlines.
Aluminum vs Steel vs Poly vs ABS
Aluminum is the default for full-size beds. It is light, corrosion resistant, and easy to move, which matters when you are adding 40 to 70 pounds to a truck. Its weakness is dent resistance, and gauges vary enormously between manufacturers.
Steel is heavier and stronger, and it is what you want if theft resistance and abuse tolerance matter more than payload. Our 14 gauge underbody box is the steel example. The tradeoff is permanent: you carry the weight every trip, and steel will eventually spot rust at the seams even under powder coat.
High-density polyethylene is the value and corrosion answer. It cannot rust, it will not dent, and at around 28 pounds for over 6 cubic feet it is the best capacity-to-weight ratio we found. The downsides are security and heat, since prolonged direct sun can warp the plastic.
ABS composite, used in swing case boxes, is the right choice for side mounts because it will not rust and survives sun and rain without painting. It is also the least durable structurally, and the pivot hardware is where these boxes fail first.
Whatever the material, gauge matters more than the label. A 0.100 inch aluminum topsider is roughly double the gauge of most imported boxes, and that single spec is the clearest quality differentiator in this group.
Security: What a Lock Actually Stops
Being honest here saves disappointment. No truck bed toolbox in this roundup is theft-proof, and anyone who tells you otherwise is selling a feeling. A lock is a delay mechanism, and its job is to make a casual theft take longer than the window your truck is unattended.
There are three lock tiers in this group. The lowest is a keyed latch where the key is required to open and close, such as the ARKSEN, the confote, and the FORWODE. Convenient for the owner and a modest deterrent, and one product here has a lock that does not actually secure the latch, so always test it.
The middle tier is a compression latch or a recessed lock for a standard padlock, which is the Buyers Products poly chest with its zinc-plated hasp. A standard padlock is the strongest option because blanks are available from any hardware store, making a lost key a two-minute fix.
The top tier is keyed-alike fleet locking, where one key opens every box on the truck. If you run two or more boxes, that is the feature to pay for. Weight also adds deterrence, since a 69 pound box is a two-person lift, and rigidity matters, because a thin-gauge box with a weak latch opens with a pry bar.
Many owners run a ratchet strap over the box as a second layer even with a good lock. It costs nothing and removes the box from casual reach. It is not a defence against a determined thief, and it is not meant to be.
Installing a Toolbox and Keeping Your Tonneau Cover
Most full-width crossovers install with J-hooks or U-bolts that clamp onto the bed rail from inside the box, so no drilling is required. That is a real advantage: you can move the box to another truck in an afternoon and you have not put holes in the bed floor.
Drilled mounts exist and they are more rigid. If you haul heavy loads over rough roads and rattle bothers you, bolting through the supplied holes is worth the effort. The Buyers Products topsider and the UWS crossover both arrive with pre-drilled slots and hardware.
The tonneau conflict is simpler than people expect. A low-profile box under about 14 inches clears most soft covers, roll-up covers, and most retractable covers. A 17 to 20 inch full-width crossover usually means the cover sits above the box, which some manufacturers allow and some do not, so check your cover’s clearance spec first.
If the box rattles, the fix is almost always the mount. Tighten the J-hooks evenly, check that rail pads are seated flat, and add a rubber strip between the box and the rail so aluminum is not chattering directly on paint. A cross-brace or a second clamp point is a 20 minute fix for a flimsy OEM mount.
Frequently Asked Questions
What size toolbox fits a full-size truck?
Most full-size half-ton beds measure roughly 69 to 72 inches rail to rail at the narrowest point, so a 69-inch crossover is the safest general choice. A 70 or 72 inch box fits most half-ton beds but can be tight on a narrower frame or against a bed extender. Measure the inside faces of your bed rails behind the wheel wells and compare that number to the box width before you buy.
How do I measure my truck bed for a tool box?
Measure four things. First, rail to rail at the narrowest point behind the wheel wells, which is the width a crossover must clear. Second, rail to rail at the front of the bed where the box will sit, since beds are not perfectly straight. Third, your bed length, so you know how much usable deck the box leaves. Fourth, the height from the bed floor to the top of your cover, so you can confirm the box clears it.
Are truck bed tool boxes worth it?
They are worth it if you regularly carry tools or gear in an open bed, because they keep expensive equipment away from rain, rust, and opportunistic theft while freeing up your hands and your tailgate. They are less worthwhile if your truck is a pure hauler and you never leave gear unattended, since a box then only removes usable bed space.
What are the common problems with truck bed tool boxes?
The four recurring complaints are the same across brands. Thin-gauge aluminum dents and paint chips. Latches that pop open over rough roads, or locks that do not actually engage the latch. Rust on latch hardware and side handles within a year. And no lid stay, so the lid falls shut on your hands. All four are worth checking in reviews before you commit to a specific model.
Is aluminum better than steel for a truck toolbox?
For most full-size bed owners, yes. Aluminum is far lighter, typically 26 to 70 pounds against 80 pounds or more for a comparable steel box, and it will not corrode in salt air or wet winters. Steel is tougher and harder to pry open, so it is the better choice for underbody mounting, service bodies, and anyone whose theft concern outweighs payload. Check the aluminum gauge, since it varies more than the material name does.
What is the best truck tool box for the money?
The best value in this roundup is the Buyers Products 6.3 cubic foot poly chest, because thick high-density polyethylene at 28 pounds will not rust, will not dent, and fits under a tonneau cover between the wheel wells. The ARKSEN 49-inch aluminum chest is the best value among aluminum options, with 180 liters at 26 pounds. Both beat imported aluminum on gauge and finish at a similar spend.
Final Verdict for Full-Size Bed Owners
After comparing all 12, the best truck tool boxes for full size beds still come down to how you use the bed. If you want the strongest general-purpose option that fits between the wheel wells and under a cover, the Buyers Products 6.3 cubic foot poly chest is the one we would own. It will not rust, it will not dent, and it takes a standard padlock.
For a true full-width box, go with the UWS EC10473 for its foam-filled RigidCore lid and heavy-wall tub, or the Buyers Products 72-inch topsider if you want the thickest aluminum and included no-drill J-hooks. For pure value, the ARKSEN 49-inch aluminum chest gives you 180 liters at 26 pounds.
If you haul wide cargo more than tools, a side-mount swing case keeps your flat deck clear. If you carry nothing that belongs in the bed at all, a Buyers Products underbody steel box removes the question entirely. Measure your rails, check your cover clearance, and pick the box that fits your bed rather than the one with the biggest number on the listing.