A-SR55 - 18"H x 24"D x 60"W - .125 Aluminum Semi Truck Trailer Underbody Toolbox, Super HD, All Smooth Finish, Left Side Open Doors with Heavy Hinge and SS Bar Latch Lock.

Underbody Trailer Boxes are Heavy Duty Trucker Grade for Premium Buyers. Boxes have Superior Track record for Longevity Grade and remaining Water-Tight and Theft-Resistant. 

Stainless Steel Bar Latch Lock and Stainless-Steel Hinges Provides Superior Strength and Break-In Protection.

Made in the USA - Most Superior Boxes on the Market Today - Compare Material Thickness for it will tell you a lot!

Underbody Boxes come with Steps and Different Sizes and with Slanted Lid to match your Trucks Style. 

Underbody Body has Smooth Finish with Smooth Finish Doors and offers easy access from side of the Trailer.

Boxes are mounted on side of Trailer Frame or under Trailer Deck. Use this Box to Store your Chains and Binders and other misc. tools you need for your Trailer. This Box feature Reversed Gutter with Durable Bulb-Type Automotive Sealing Door Gaskets.

Underbody Boxes come in various sizes, styles, materials & finishes.

Boxes are available in durable aluminum diamond tread and smooth finish.

Mounting Kit Use:

For C-or I Frame Mounting Kit purchase: Part Numbers M2100C or M2100I.

For Under Deck Mounting Kit purchase: Part Numbers M2450UD Series Brackets.