Best Tool Box For Flat Bed Truck: Compare 10 Storage Options

#1 · Best Overall

1. Buyers Products 1721678

• Dimensions: 73"L x 21.5"W x 18.5"H
• Material: Aluminum
• Weight: 176.9 lb

Best for: Flatbed contractor organization.

Why it ranks #1: Its 72-inch aluminum contractor format is designed for flatbeds and offers two storage tiers, lower drawers, a secure lock, and weather-resistant construction.

Two lower drawers distinguish this 72-inch Buyers Products contractor box, giving crews separate places for smaller tools and hardware alongside its dual-tier storage. The 21-inch-tall, 18-inch-deep format is aimed at carrying work equipment while preserving bed space for sheet goods and oversized cargo.

The dual-tier layout provides separate storage levels for hand tools, power equipment, and hardware, helping keep a contractor’s gear sorted instead of mixed together. At 72 inches long, 21 inches tall, and 18 inches deep, the box offers substantial storage while its stated layout preserves space for larger cargo. Its 0.100-inch diamond-tread aluminum is corrosion-resistant and finished in gloss black powder coat. The listed bulb seal and rain gutter support weather-resistant storage; the 176.9-pound weight matters when planning installation.

Skip it if you need a lighter box with side handles; the VEVOR 48-by-15-inch aluminum chest weighs 25.6 pounds.

This is for contractors carrying hand tools, power equipment, and hardware on a flatbed while reserving room for bulky cargo. Account for its 176.9-pound weight and 72-inch length when planning placement and installation.

Listed on Amazon as: Buyers Products 1721678 Aluminum Heavy-Duty Flatbed Contractor Truck Tool Box with Lower Drawers, Gloss Black Diamond Tread, 21x18x72 in Dual-Tier Storage, Secure Locking, Made in USA

#2 · Best Topsider

2. VEVOR Contractor Box

• Dimensions: 72.05"L x 12.8"W x 21.06"H
• Material: Aluminum, Stainless Steel
• Weight: 92.6 lb

Best for: Long-tool contractor storage.

Why it ranks #2: The 72-inch aluminum topsider has two lower drawers, a flip-up door, and included fixed rods and J-hooks for its truck-bed installation.

Two lower drawers give this 72-inch VEVOR TopSider separate storage levels for contractor gear, while its slim profile accommodates long tools such as drills, cables, and crowbars. The aluminum box also has a flip-up door and a two-position latch for access and closure.

The 72-inch length and slim 12.8-inch depth create room for long tools without the footprint of a deeper chest, while the two lower drawers help separate smaller items from the main storage area. A flip-up door provides access from above, and the two-position latch gives an adjustable locking position. The 0.07-inch aluminum construction is described as resistant to rust and wear; solid welding and fixed rods help keep the box firmly in place on bumpy roads. Its 92.6-pound weight affects installation.

Skip it if you want a lighter compact box with side handles; the Nilight 30-inch toolbox weighs 6.6 kilograms.

This suits contractors who carry long tools and want drawer organization on a truck bed. Its 72-inch length, 12.8-inch depth, and 92.6-pound weight are important fit and installation considerations.

Listed on Amazon as: VEVOR Contractor Truck Tool Box, 72 x 21 x 13 in, Black Tread Aluminum TopSider Toolbox with Two Lower Drawers, Flip Up Door, Weather-Resistant Heavy Duty Storage Box with Latch, for Truck Bed Pickup

#3 · Best Barn Door

3. HEVIKE Underbody Box

• Dimensions: 48"L x 18"W x 18"H
• Material: Aluminum
• Weight: 50 lb

Best for: Weather-resistant side-mount storage.

Why it ranks #3: Its 48 x 18 x 18-inch aluminum design explicitly suits flatbed trucks, trailers, and semis, with double barn doors and a cam lock.

A double barn-door opening gives the HEVIKE underbody toolbox access across its 48-inch side, making stored equipment easier to reach in a flatbed or trailer setup. Its aluminum construction, powder coating, and cam lock combine outdoor protection with a lockable storage point.

The 48-by-18-by-18-inch format is specified for side mounting on trailers, semis, and flatbed trucks, placing equipment in an underbody storage position. Double barn doors provide an opening arrangement for accessing stored items, while the smooth, non-mirror finish is described as easy to open and close. Aluminum resists corrosion, and the powder-coated surface blocks rain and resists corrosion; an internal structure also safeguards the lid. The 50-pound weight is a consideration when positioning the box.

Skip it if you want two separate lower drawers for a contractor setup; the Buyers Products 1721678 has that storage arrangement.

This fits flatbed, trailer, or semi owners seeking lockable underbody storage with double-door access and weather-resistant aluminum. Consider the 50-pound weight and the 48-by-18-by-18-inch space required for installation.

Listed on Amazon as: Heavu Duty Aluminum Underbody Truck Tool Box With Cam Lock, Double Barn Door, 48"×18"×18" Side Mount Tool Box for Trailer, Semi Truck, Flatbed Truck

#4 · Best Steel Underbody

4. Buyers Products 1702305

• Dimensions: 36"L x 18"W x 18"H
• Material: Alloy Steel
• Weight: 76 lb

Best for: Secure steel underbody storage.

Why it ranks #4: This 36 x 18 x 18-inch, 14-gauge steel box is listed for flatbed and underbody use and includes a locking compression latch.

A stainless-steel T-handle compression latch pulls the Buyers Products box’s recessed drop door against its gasket, helping secure tools and reduce rattling during travel. Its 14-gauge steel construction and 36-by-18-by-18-inch dimensions make it a substantial underbody storage option for work trucks, flatbeds, and trailers.

The continuous hinge and recessed drop door provide a defined opening for access to tools, parts, and supplies, while the compression latch pulls the door firmly against the gasket. That arrangement is intended to help deter theft, reduce rattling, and keep equipment secured on the move. A corrosion-resistant black powder coat protects the 14-gauge steel body, and its 36-by-18-by-18-inch dimensions provide a sizable compartment. At 76 pounds, it requires planning when positioning it under a vehicle.

Skip it if you need two smaller boxes to place separately; the Vigorighter 24-inch underbody set includes two units.

This suits work-truck, flatbed, and trailer owners seeking a lockable steel compartment for tools and supplies. Its 36-by-18-by-18-inch size and 76-pound weight call for careful placement planning.

Listed on Amazon as: Buyers Products 1702305 36 x 18 x 18 Inch Steel Underbody Tool Box

#5 · Best Two-Pack

5. Vigorighter Underbody Box

• Dimensions: 24"L x 12"W x 14"H
• Material: Alloy Steel

Best for: Paired steel underbody boxes.

Why it ranks #5: Two 24 x 12 x 14-inch steel boxes are listed for flatbeds and other vehicles, offering a way to split storage across mounting locations.

This Vigorighter set supplies two 24-by-12-by-14-inch steel boxes, letting flatbed owners divide tools between separate underbody storage locations. Each has a T-handle latch and powder-coated steel construction, while fully welded seams are specified to keep rain, dust, and grime out.

Two boxes make it possible to separate tool groups or place storage at different points on a truck, trailer, RV, or flatbed. Each 24-by-12-by-14-inch unit uses alloy steel with a rigid powder-coat finish, supporting the stated heavy-duty and corrosion-resistant construction. Fully welded seams provide the listed barrier against rain, dust, and grime, and the lockable T-handle latch secures each box. The listed maximum weight recommendation is 20 pounds, which sharply limits how heavily each unit should be loaded.

Skip it if you need a higher listed load limit for a single box; the Buyers Products 1702305 lists 3,401.64 cubic inches of capacity.

This set suits owners who want two smaller lockable compartments on a flatbed, trailer, or RV. The 20-pound maximum weight recommendation is a crucial boundary, so it is not for heavily loaded tool storage.

Listed on Amazon as: 24 Inch Underbody Tool Boxes for Truck 2 Pack, 24 x 12 x 14 Inch Steel Under Body Storage Box with T-Handle Latch, Waterproof Heavy Duty Toolbox for Pickup Truck RV, Black (Pack of 2)

#6

6. COOLBAG 48-Inch Box

• Dimensions: 48"L x 21"W x 15"H
• Material: Aluminum
• Weight: 21 kg

Best for: Two-level truck-bed storage.

Why it ranks #6: The 48-inch aluminum box has two layers, a lock, and weather-resistant features, though its listing does not specifically identify flatbed installation.

Two storage layers give the COOLBAG 48-inch aluminum toolbox a way to separate gear rather than pile everything together. Its single lower door provides access to stored tools and supplies, while the lock and keys secure the contents for truck, van, or trailer use.

The 48-by-21-inch footprint offers extra truck-bed storage, and the two-layer layout can keep items such as wrenches, jacks, safety chains, and camping supplies organized. A five-bar tread aluminum body combines a textured surface with a weather-resistant construction, while the listed dustproof and weathertight features suit gear carried outdoors. The built-in lock and keys add a secured storage point. Check the available bed space against its listed dimensions before choosing this large-format box.

Skip it if you need underbody mounting or separate drawers; the VEVOR 72-inch Contractor Box has two lower drawers.

This suits truck, van, or trailer owners who want a lockable, two-level box for tools and trip supplies. Its 48-by-21-inch footprint needs a clear storage area, so measure the intended space before buying.

Listed on Amazon as: 48" Truck Tool Box With One Lower Door,Heavy-Duty Aluminum 5 Bar Tread Double-layer Toolbox, 48"x 21"x 15" Truck bed Tools Storage Organizer W/Lock and Keys For Truck, Van, Trailer

#7

7. VEVOR 48-Inch Chest

• Dimensions: 48"L x 15"W x 15"H
• Material: Aluminum
• Weight: 25.6 lb

Best for: Large aluminum bed chest.

Why it ranks #7: This 48 x 15 x 15-inch aluminum chest provides 177 liters of capacity and includes two keys, but its listing focuses on truck-bed storage generally.

A 177-liter capacity gives the VEVOR 48-by-15-by-15-inch toolbox room for bulkier truck-bed gear, while its widened handle provides a grip for carrying. The aluminum alloy diamond-plate chest includes a lock and two keys, making it a lockable storage choice for pickups, RVs, and trailers.

The 177-liter interior suits buyers who need more than a small underbody compartment, and the 48-inch length offers a broad space for tools and other stored belongings. Its 15-inch width and height establish the footprint to plan around in a truck bed. Aluminum alloy construction, a diamond-tread surface, and a double-sided coating process are stated to resist rust, corrosion, and abrasion. The listed maximum weight recommendation is 110 pounds, a useful limit to keep in mind when loading the chest.

Skip it if you need a drawer-based contractor layout; the VEVOR 72-inch Contractor Box includes two lower drawers.

This is for pickup, RV, or trailer owners who want a large lockable aluminum chest for general gear. Its 110-pound maximum weight recommendation and 48-by-15-inch footprint should guide loading and placement.

Listed on Amazon as: 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, 48"x15"x15", Black

#8

8. Nilight 30-Inch Box

• Dimensions: 30"L x 13"W x 9.6"H
• Material: Aluminum
• Weight: 6.6 kg

Best for: Compact under-bed tool storage.

Why it ranks #8: At 30 x 13 x 9.6 inches, this lockable aluminum box is a compact option for truck or trailer storage, though it is described as under-bed fitting.

A low-profile 30-by-13-by-9.6-inch shape lets the Nilight toolbox fit under a truck bed, trailer, or RV, using otherwise overlooked space for organized tool storage. Its aluminum body, lock, and two side handles make it a compact option for owners who value movable, secured gear.

The rectangular dimensions suit under-bed storage where a taller box may not fit, while the low profile keeps the storage solution compact. Its corrosion-resistant aluminum body has a powder-coated finish and sealed structure, features that support durability in exposed vehicle storage. A sturdy lock with a special key secures contents, and two side handles provide an easier grip when moving the 6.6-kilogram box. Its 30-inch length and 9.6-inch height make it better suited to smaller gear than bulky equipment.

Skip it if you store long drills and crowbars in a tall topsider; the VEVOR 72-inch Contractor Box lists storage for long tools.

Choose this for smaller tools that need lockable storage beneath a truck, trailer, or RV. Its compact 30-inch length and 9.6-inch height are useful in tight spaces, but limit capacity for tall or bulky equipment.

Listed on Amazon as: Nilight 30 Inch Truck Tool Box Heavy Duty Aluminum Diamond Plate Toolboxes

#9

9. Jojoka 56-Inch Box

• Dimensions: 54"L x 16"W x 14"H
• Material: Alloy Steel
• Weight: 80.5 lb

Best for: Compartmented steel bed storage.

Why it ranks #9: Its steel truck-bed design lists a 54 x 16 x 14-inch size and multiple compartments, but the title and dimensions do not match on length.

Multiple compartments give the Jojoka steel toolbox a way to keep hand tools and accessories sorted, while its grooved double lid supports quick access. An ergonomic side handle aids carrying, and the steel box is listed as impact resistant for truck, RV, and trailer storage.

The compartmented interior helps separate hand tools from accessories, reducing the need to search through one undivided space. A grooved double lid combines the stated security feature with quick access, and the ergonomic side handle supports carrying the 80.5-pound box. Alloy steel construction is described as heavy-duty, and the product description presents it as weatherproof storage for trucks, RVs, and trailers. The listed dimensions are 54 by 16 by 14 inches, so plan around that footprint rather than the title’s 56-inch figure.

Skip it if you want aluminum construction to reduce box weight; the VEVOR 48-by-15-inch aluminum chest weighs 25.6 pounds.

This suits owners seeking compartmented steel storage for a truck, RV, or trailer, with a handle for transport. Its 80.5-pound weight and listed 54-by-16-by-14-inch dimensions matter when planning placement.

Listed on Amazon as: Heavy Duty 56 Inch Steel Truck Bed Tool Box – Waterproof Metal Organizer

#10

10. Montezuma Triangle Toolbox

• Dimensions: 1"L x 1"W x 1"H
• Material: Aluminum

Best for: Organized socket-set storage.

Why it ranks #10: The triangle layout is intended for pickup or work-truck mounting, but its listed 1 x 1 x 1-inch dimensions provide no usable basis for flatbed fit.

A triangle-shaped layout locks tools in place when closed, while Montezuma’s lift-up socket tray and open base keep SAE and metric sets visible. This truck-oriented toolbox is intended to mount at the back of a pickup or work truck, giving frequently used tools an organized, accessible home.

The multi-tier arrangement separates sockets from tools stored in the open base, so SAE and metric sets can be viewed at a glance instead of buried in a single pile. Its lift-up socket tray gives quick access to those sets, and the triangle shape is described as holding tools in place when the box is closed. The listing describes fully welded seams and 16-gauge steel construction, while the product specifications identify aluminum; verify the material details before choosing it for a specific installation.

Skip it if you need a clearly specified, rectangular underbody box; the Buyers Products 1702305 lists steel construction and 36-by-18-by-18-inch dimensions.

This suits pickup or work-truck owners who prioritize visible socket organization and a closed shape that holds tools in place. The conflicting material details warrant checking the specification before choosing it for a particular mounting plan.

Listed on Amazon as: Triangle Toolbox, Truck Bed Tool Box, Heavy Duty Steel Storage Toolbox