When you need the absolute maximum secure storage that mounts on your truck bed rails while minimizing weight, the WEATHER GUARD Super Hi-Side Tool Box (Model 391-52-02) delivers professional-grade performance with lightweight aluminum diamond plate construction and textured matte black finish. This super hi-side truck tool box provides an exceptional 15.2 cubic feet of storage capacity for valuable tools, equipment, and parts, mounting along the bed rail to maximize accessibility while preserving your truck bed for supplies, materials, and larger equipment. Measuring 90.25" long, 16.25" wide, and 18" high, this ultimate-capacity configuration combines maximum length with super hi-side height to create the largest side-mounted storage available—now in lightweight aluminum that weighs just 85.5 pounds compared to 151 pounds for comparable steel boxes. The door opening (14.75" high by 42" wide) provides excellent access to contents, while the aluminum door and hinge provide corrosion resistance throughout. The drill-resistant lock core and three-point latching system provide extreme security, while the rain gutter and full weather seal with memory-resistant D-shaped ribbed weather strip keep moisture out. The textured matte black ARMOR TUF powder coat finish over aluminum diamond plate creates a distinctive, rugged appearance while ensuring years of dependable service. Tool-less quick release doors adjust from 90 to 180 degrees with QuickClips, the removable parts bin keeps small items organized, and convenient attachment points secure materials and tools. For contractors, fleet managers, tradespeople, or anyone with long-bed trucks needing ultimate side-mounted storage capacity with lightweight aluminum construction and distinctive black diamond plate styling, this super hi-side box delivers the comprehensive solution.
Ultimate Lightweight Aluminum Diamond Plate Construction
The defining advantage of this truck tool box is the combination of ultimate 15.2 cubic foot capacity in lightweight aluminum diamond plate construction. At just 85.5 pounds, this aluminum box weighs 43% less than the comparable 151-pound steel version—a dramatic weight savings that translates to substantial benefits for payload capacity, fuel economy, easier installation, and reduced stress on truck suspension.
The aluminum diamond plate construction provides professional strength while delivering exceptional weight efficiency. Aluminum offers natural corrosion resistance ensuring long-term durability even when constantly exposed to moisture, road salt, and harsh environmental conditions—the material maintains structural integrity through years of outdoor exposure without rusting or deteriorating. The diamond plate texture provides additional structural rigidity, creates the distinctive professional appearance that many contractors and enthusiasts prefer, and offers slip resistance on the top surface.
At 90.25" long and 18" high, this super hi-side configuration creates 15.2 cubic feet of storage capacity—the maximum available in side-mounted truck tool boxes. The super hi-side design extends to 18" high compared to standard boxes at 12-14" or regular hi-side boxes at 16", creating substantially more vertical storage space for taller equipment, stacked tool cases, larger power tools, or extensive inventories. Combined with the 90.25" length spanning nearly the entire length of long-bed trucks, this creates exceptional storage volume for the most demanding professional requirements—all while weighing 65 pounds less than steel alternatives.
The 16.25" width extends outward from the bed rail, providing substantial depth for larger items and stacked storage. The textured matte black ARMOR TUF powder coat finish over aluminum diamond plate creates a distinctive, rugged appearance that sets your truck apart while providing additional protection against scratches and UV damage. The black finish offers unique advantages: hides dirt and wear better than lighter colors, creates modern aggressive styling, coordinates with black truck accents and accessories, and maintains the distinctive diamond plate texture visibility.
Professional Security and Weather Protection
The super hi-side aluminum box is engineered with multiple security features working together to protect the substantial investment in tools and equipment that 15.2 cubic feet typically contains. The drill-resistant lock core resists one of the most common break-in methods where thieves attempt to drill out locks. The three-point latching system provides extreme security by engaging locks at three separate points across the lid—distributing force and making prying entry extremely difficult even with the long lid span and lightweight aluminum construction.
Security features can be configured as key-alike on request for fleet operations managing multiple vehicles with side boxes—allowing one key to access all units across your fleet for simplified key management.
The rain gutter and full weather seal keep moisture out of the high side truck bed tool box and your equipment. The memory-resistant D-shaped ribbed weather strip maintains its sealing effectiveness through thousands of opening and closing cycles and extreme temperature variations, ensuring your extensive tool inventory remains dry and protected from rust and corrosion.
The aluminum door and hinge provide complete corrosion resistance throughout the box—there are no steel components that could rust over time. This all-aluminum construction is particularly valuable for trucks operated in harsh environments with salt exposure, coastal areas with salt air, or any conditions where corrosion is a concern.
Professional Features and Modern Styling
The tool-less quick release doors adjust from 90 degrees to 180 degrees with QuickClips and no tools required. This adjustable door opening provides versatility: 90-degree opening for normal access, 180-degree opening (lid folds completely back) when you need maximum access to the extensive interior or are working in tight spaces.
The removable parts bin keeps small items organized within the substantial 15.2 cubic foot storage space. Small parts, fasteners, fittings, and accessories can easily become lost in such a large box. The removable bin provides dedicated organization, and being removable means you can take it with you.
Convenient attachment points secure materials and tools in the pickup bed, providing tie-down capabilities that work in conjunction with the maximum-length side box.
The door opening measures 14.75" high by 42" wide, providing excellent access to the interior along a substantial portion of the box length. This large opening allows easy loading and retrieval of bulky items, reaching across the interior, and organizing the extensive contents. The double lid construction with heavy-duty C-channel reinforced lids provides structural strength across the long opening span even with lightweight aluminum construction.
The bed rail mounting location positions the box along the top of the bed rail, providing easy exterior access without consuming bed floor space. Installation takes approximately 0.7 hours (about 42 minutes) and involves securing the lightweight 85.5-pound box to your truck's bed rails—significantly easier than handling 151-pound steel boxes, often manageable with one person for positioning.
Key Features
- Lightweight 85.5 lbs Aluminum: 43% lighter than steel—maximum 15.2 cu ft capacity without weight penalty
- Distinctive Black Diamond Plate: Textured matte black finish—rugged professional appearance with corrosion-resistant aluminum
- Ultimate 90.25" x 18" Capacity: 15.2 cu ft—maximum available side-mounted storage for long-bed trucks
- Drill-Resistant 3-Point Lock: Extreme security—protects substantial tool investment with all-aluminum corrosion resistance
Applications and Compatibility
The WEATHER GUARD Super Hi-Side Tool Box 15.2 cu ft in aluminum diamond plate is specifically designed for long-bed truck owners who need ultimate side-mounted storage capacity with the advantages of lightweight aluminum construction and distinctive black diamond plate styling.
This ultimate-capacity lightweight configuration is particularly valuable for contractors prioritizing payload capacity who need maximum tool storage without excessive weight, operations in harsh environments where corrosion resistance is critical, professionals who appreciate the distinctive diamond plate appearance, custom truck builds emphasizing weight reduction, or anyone with a long-bed truck wanting maximum side storage with modern black styling.
The 85.5-pound weight makes this the most manageable ultimate-capacity side box for installation, often allowing one-person positioning where steel boxes require two people. The weight savings preserves approximately 65 pounds of payload capacity compared to steel—meaningful when your livelihood depends on hauling capacity.
The 90.25" length fits along one side of long-bed trucks, while the super hi-side 18" height requires adequate clearance. The style side bed compatibility means this box is designed for trucks with traditional bed sides.
Quality and Specifications
Model Number: 391-52-02
Style: Super Hi-Side Box (Ultimate-Capacity Aluminum)
Material: Aluminum Diamond Plate with Aluminum Door and Hinge
Finish: Textured Matte Black ARMOR TUF Powder Coat
Storage Capacity: 15.2 cubic feet
Construction: Heavy-Duty Welded with C-Channel Reinforced Lid
Security System: Drill-Resistant Lock Core with Three-Point Latching
Weather Protection: Rain Gutter, Full Weather Seal, Memory-Resistant D-Shaped Ribbed Weather Strip
Door Opening: Adjustable 90-180 Degrees with Tool-Less QuickClips
Mounting Location: Bed Rail
Installation Time: 0.7 hours
Key-Alike: Available on Request
Warranty: Limited Lifetime
Country of Origin: USA
UPC: 783965045490
Dimensions:
- Length: 90.25" (maximum)
- Width: 16.25"
- Height: 18" (super hi-side)
- Weight: 85.5 lbs (43% lighter than steel)
Door Opening:
- Height: 14.75"
- Width: 42"
Key Features:
- 15.2 cu ft ultimate capacity
- Lightweight 85.5 lb aluminum
- Aluminum diamond plate
- Textured matte black finish
- 90.25" maximum length
- 18" super hi-side height
- Drill-resistant lock core
- Three-point latching
- All-aluminum corrosion resistance
- Rain gutter and weather seal
- Tool-less adjustable doors (90-180°)
- Removable parts bin
- C-channel reinforced double lid
- USA manufacturing
Applications:
- Long-bed trucks prioritizing weight savings
- Operations in harsh/corrosive environments
- Professionals valuing diamond plate appearance
- Custom truck builds
- Payload-critical applications
- Maximum capacity with minimal weight
- Modern black styling preferences
Ultimate Storage with Lightweight Efficiency
Whether you're a contractor who needs maximum tool storage without sacrificing payload capacity, an operation in harsh environments requiring corrosion-resistant ultimate storage, a professional who appreciates distinctive diamond plate styling with modern black finish, a custom truck builder prioritizing weight reduction, or anyone with a long-bed truck seeking the absolute maximum side-mounted storage in lightweight aluminum with aggressive styling, the WEATHER GUARD Super Hi-Side Tool Box 15.2 cu ft in black aluminum diamond plate delivers the ultimate solution.
This professional lightweight ultimate-capacity super hi-side truck tool box combines 90.25" length and 18" super height providing 15.2 cubic feet, lightweight 85.5 lb aluminum construction (43% lighter than steel), all-aluminum diamond plate corrosion resistance, textured matte black finish creating distinctive appearance, drill-resistant three-point locking, rain gutter and weather sealing, tool-less adjustable doors, removable parts bin, convenient attachment points, and USA manufacturing with Limited Lifetime Warranty.
This isn't just side-mounted storage—it's the ultimate combination of maximum capacity, lightweight efficiency, corrosion resistance, and distinctive styling that transforms your long-bed truck into the ultimate professional vehicle while preserving valuable payload capacity for the materials and equipment that generate revenue.
Terms to Know
- Aluminum Diamond Plate: Aluminum sheet with raised diamond pattern—provides structural rigidity, slip resistance, and distinctive professional appearance while remaining lightweight and corrosion-resistant.
- Super Hi-Side Aluminum: 18" height in corrosion-resistant aluminum—maximum vertical storage without steel's weight or rust concerns.
- Textured Matte Black Finish: Non-gloss black powder coat over diamond plate—creates rugged modern appearance while maintaining texture visibility.
- Three-Point Latching on Aluminum: Security system designed for aluminum construction—provides extreme protection without steel's weight.
- Long-Bed Application: 90.25" length designed for 8' beds—spans nearly entire bed length in lightweight corrosion-resistant aluminum.
- C-Channel Reinforced Aluminum: Aluminum lid strengthened with C-channels—provides rigidity across long span without steel's weight.
- One-Person Installation: 85.5-pound weight often manageable by single person—significant advantage over 151-pound steel boxes.
- ARMOR TUF on Aluminum: Powder coat process over aluminum—protects against scratches while maintaining distinctive diamond plate texture.
