When standard hi-side boxes don't provide enough storage capacity but you still need full truck bed floor access, the WEATHER GUARD Super Hi-Side Tool Box (Model 365-0-02) delivers the ultimate solution. This premium automotive accessory takes the proven hi-side concept to the next level with 10.8 cubic feet of storage—37% more capacity than standard hi-side boxes—while still mounting on bed rails to keep your entire bed floor open. The larger aluminum diamond plate construction provides room for bulkier items, longer tools, and more equipment without compromising the cargo flexibility that makes hi-side boxes so valuable. For professional contractors, tradespeople, and serious truck owners who demand maximum storage capacity without sacrificing bed utility, this super hi-side configuration represents the best of both worlds: exceptional tool storage capacity with complete bed floor access for materials, equipment, and cargo.
Super Hi-Side Design: 10.8 Cubic Feet of Capacity
The super hi-side configuration expands on the traditional hi-side design by increasing both width and height, creating 10.8 cubic feet of storage capacity—significantly more volume than standard 7.9 cubic foot hi-side boxes. At approximately 64.25" long, 16.25" wide, and 18" high, this larger footprint provides room for items that simply won't fit in standard boxes: larger power tools, bulky equipment, multiple tool bags, paint sprayers, air compressors, testing equipment cases, or any combination of tools and supplies that demands more space.
The increased door opening—14.75" high by 29" wide on each side—makes loading and accessing larger items significantly easier. You can fit items that would be difficult or impossible to maneuver through standard hi-side openings, making this super hi-side box ideal for operators whose tool requirements exceed what conventional boxes can accommodate.
Despite the increased capacity, the box still mounts on bed rails, preserving the fundamental advantage of hi-side storage: your entire truck bed floor remains open. You can still haul full sheets of plywood, long lumber, ladders, pipe, equipment, pallets, or any cargo that requires the full bed length and width. This makes the super hi-side box perfect for contractors who need extensive tool storage but also regularly transport materials—you're not forced to choose between adequate storage and cargo capacity.
Heavy-Duty Aluminum Diamond Plate Construction
The aluminum diamond plate construction provides the strength needed for this larger capacity while keeping weight manageable. At 66 pounds, the super hi-side box weighs only 9 pounds more than the standard hi-side despite offering 37% more storage volume—testament to aluminum's excellent strength-to-weight ratio. Aluminum naturally resists corrosion, ensuring years of reliable service without rust issues even in harsh weather, road salt, or chemical exposure.
The diamond plate texture provides slip resistance and structural rigidity while creating the professional appearance associated with quality truck accessories. The Clear ARMOR TUF powder coat finish over the aluminum diamond plate provides additional protection against scratches and UV exposure while maintaining the classic polished aluminum look that many professionals prefer.
The aluminum door and hinge system keeps weight down while maintaining durability for the larger, heavier doors required by the super hi-side design. The heavy-duty welded construction and heavy-duty C-channel reinforced lids provide the structural integrity needed to support the larger capacity and withstand demanding commercial use.
Key Features
- Super Hi-Side Capacity: 10.8 cubic feet storage—37% more than standard hi-side boxes while keeping bed floor completely open
- Extra-Large Door Openings: 14.75" H x 29" W doors accommodate bulkier items and larger power tools easily
- Tool-Less Adjustable Doors: QuickClips allow doors to adjust from 90° to 180° without tools for flexible access in any situation
- Extreme Security: Drill-resistant lock core with three-point latching system plus convenient attachment point for securing materials
Innovative Features and Organization
The tool-less adjustable door system using QuickClips provides the same flexibility as standard hi-side boxes but becomes even more valuable with the larger super hi-side doors. Adjust each door to 90° for standard access or 180° (flat against truck side) for maximum clearance—particularly useful when loading or unloading the bulkier items this larger box accommodates. The adjustment requires no tools and takes just seconds.
The removable parts bin keeps small items, fasteners, and frequently accessed parts organized rather than lost at the bottom of the larger storage space. With 10.8 cubic feet of capacity, organization becomes increasingly important, and the parts bin ensures small items remain accessible.
A unique feature of this super hi-side box is the convenient attachment point that secures materials and tools in the pickup bed. This integrated tie-down point adds versatility for securing cargo, creating a multi-functional storage and cargo management system.
Security and Weather Protection
The drill-resistant lock core defeats common break-in attempts targeting standard locks. The three-point latching system secures the larger lids at three locations, ensuring they remain secure and properly sealed even under force. This is particularly important with the larger super hi-side design where lid size could otherwise create vulnerability.
Weather protection is comprehensive. The rain gutter channels water away from the opening, while the full weather seal uses memory-resistant D-shaped ribbed weather stripping that maintains sealing effectiveness through repeated use and temperature cycling. This keeps tools dry and prevents rust regardless of weather conditions during transport or storage.
Installation and Quality
Installation on bed rails takes approximately 0.7 hours (about 40 minutes). The bed rail mounting creates secure attachment compatible with style-side truck beds—the most common configuration. Despite the larger size, installation follows the same proven process as standard hi-side boxes.
The Limited Lifetime Warranty demonstrates WEATHER GUARD's confidence in construction quality. USA manufacturing ensures the quality control standards that have made WEATHER GUARD the professional's choice for decades. Optional key-alike configuration is available on request.
Product Specifications
- Box Style: Super Hi-Side Tool Box
- Material: Aluminum Diamond Plate
- Finish: Clear ARMOR TUF Powder Coat (Polished Aluminum Appearance)
- Storage Capacity: 10.8 cubic feet
- Mounting Location: Bed Rail
- Opening Type: Double Lid
- Door Size: 14.75" H x 29" W (each side)
- Lock System: 3-Point Latch with Drill-Resistant Core
- Construction: Heavy-Duty Welded
- Lid Construction: Heavy-Duty C-Channel Reinforced
- Weather Strip: Memory-Resistant D-Shaped Ribbed
- Installation Time: 0.7 hours
- Warranty: Limited Lifetime
- Country of Origin: USA
Dimensions:
- Length: 64.25"
- Width: 16.25"
- Height: 18"
- Weight: 66 lbs
Key Features:
- 10.8 cu ft storage capacity
- Tool-less adjustable doors (90° to 180°)
- Removable parts bin
- Convenient attachment point
- Rain gutter and full weather seal
- Aluminum door and hinge system
- Three-point latching system
- Drill-resistant lock core
- USA manufacturing
Compatible With:
- Style-side truck beds
- Bed rail mounting
- Most full-size trucks
Maximum Storage Without Compromise
Whether you're a contractor with extensive tool requirements who still needs to haul materials, a tradesperson whose equipment collection has outgrown standard storage, a service technician requiring room for bulky testing equipment and tool cases, or a professional who demands maximum capacity without sacrificing bed utility, the WEATHER GUARD Super Hi-Side Tool Box delivers the ultimate solution. The combination of 10.8 cubic foot capacity, extra-large door openings, innovative adjustable door system, extreme security, comprehensive weather protection, and lightweight aluminum construction makes this super hi-side box the intelligent choice for operators whose storage needs exceed what standard boxes provide. With USA manufacturing backed by a Limited Lifetime Warranty, this represents the pinnacle of bed rail storage—maximum capacity without compromise.
Terms to Know
- Super Hi-Side Tool Box: An enlarged version of hi-side storage that mounts on bed rails but offers significantly more capacity through increased width and height while still preserving full bed floor access.
- Hi-Side Tool Box: A truck storage solution mounting on bed rails to provide storage above the bed floor rather than occupying floor space.
- Bed Rail Mounting: Installation method attaching the toolbox to the top of truck bed side rails without drilling into the bed floor.
- Diamond Plate: Textured aluminum panel featuring raised diamond-shaped patterns providing slip resistance and structural strength.
- Three-Point Latching: Security system where the lid secures at three locations for enhanced security and even closure force.
- Drill-Resistant Lock Core: Lock mechanism designed with hardened materials to resist drilling attacks.
- QuickClips: WEATHER GUARD's tool-free adjustment system allowing doors to be repositioned between 90-degree and 180-degree opening angles.
- ARMOR TUF Powder Coat: Durable finishing process creating a tough, chip-resistant, corrosion-proof protective layer.
- Memory-Resistant Weather Stripping: Weather seal material maintaining its original shape and sealing properties through repeated use.
- C-Channel Reinforcement: Structural reinforcement using C-shaped metal channels adding rigidity without excessive weight.
