Aluminum Truck & Trailer Underbody Tool Box 20″H × 16″D × 72″W (Powdercoated Checkerplate Single Door with Whale Tail Handles)

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 offers strong structural performance while remaining lightweight and corrosion-resistant. The 20″H × 16″D × 72″W size provides long, horizontal storage capacity—ideal for flatbed trailers and commercial trucks requiring extended tool and equipment space along the frame.

The powdercoated checkerplate finish delivers a rugged, textured appearance while adding an extra layer of surface protection. The single-door design allows full front access across the box, making it easier to load and organize longer tools and gear. Equipped with secure whale tail handles, this toolbox provides dependable latching and added security during transport.

Suitable for side, frame, or under-deck mounting, this storage box is commonly installed on flatbed trailers and 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
• 20″H × 16″D × 72″W Size – Extended horizontal storage capacity
• Powdercoated Checkerplate Finish – Rugged, durable, professional appearance
• Single Door Design – Full front access for longer tools and equipment
• Whale Tail Handles – Secure, reliable latching system
• 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.