Aluminum Truck & Trailer Underbody Tool Box 18″H × 18″D × 36″W (Checkerplate Double Door with Cam Lock)

Store tools and equipment securely with this aluminum truck and trailer underbody tool box, built for heavy-duty performance and everyday reliability in demanding commercial environments.

Constructed from 1/8″ thick aluminum, this heavy-duty storage box delivers excellent strength while remaining lightweight and corrosion-resistant. The 18″H × 18″D × 36″W size offers practical mid-size storage capacity, making it ideal for flatbed trailers and commercial trucks where space efficiency and accessibility matter. The checkerplate aluminum finish adds extra surface durability while providing a rugged, professional appearance that complements working truck setups.

The double-door design allows convenient access from both sides of the box, improving usability on busy job sites. Each door is equipped with a secure camlock handle to help protect tools, chains, binders, and equipment during transport. Suitable for side, frame, or under-deck mounting, this toolbox is commonly installed on flatbed trailers and other commercial truck applications.

Designed and manufactured in Brantford, Ontario, this box is trusted by truckers and fleet operators across Canada for dependable, long-term performance.

Key Features

• 1/8″ Thick Aluminum Construction – Strong, lightweight, and corrosion-resistant
• 18″H × 18″D × 36″W Size – Practical mid-size storage capacity
• Checkerplate Aluminum Finish – Durable, rugged appearance
• Double Doors – Easy access from both sides
• Secure Camlock Handles – Keeps tools and equipment protected
• Versatile Mounting Options – Suitable for truck and trailer installations
• Made in Canada – Manufactured in Brantford, ON

Mounting Recommendations:

Select the bracket size based on your vehicle type:

For Trailers (Large Mounting Brackets):

• Steel trailer frames: SBMTGPC2 – Large Steel Powder-Coated L-Brackets
• Aluminum trailer frames: SBMTGAL2 – Large Aluminum L-Brackets

For Trucks (Small Mounting Brackets):

• Steel truck frames: SBMTGPC1 – Small Steel Powder-Coated L-Brackets

For best results, we recommend using brackets that match your truck or trailer frame material to help prevent galvanic corrosion.

Brackets are sold separately.

View All Mounting Brackets → 

Why Trison?

Trison is a Canadian manufacturer specializing in high-quality aluminum storage solutions, headache racks, and other trucking accessories. Our products are designed for strength, longevity, and real-world performance.

Same-day shipping on orders placed before 12:00 pm.
Local pickup available in Brantford, ON.

For questions, call 1-519-720-9464.