M2600UD - 24"H x 48"W - Aluminum Under-Deck HD Mounting Kit for Cargo Boxes with 2 Hanger Adjustable Bracket and All Smooth Finish.

Under-Deck Brackets are Heavy Duty Trucker Grade for Premium Buyers. Brackets have Superior Track record for Longevity Grade. 

Single Bracket (For Center Piece)

Two Mounting Brackets are required minimum and will be used to Mount Box to Truck Deck or Trailer Deck. This Kit comes with One set of brackets and Mounting Bolts, Washer and Nuts and Installation Sheet.

Weight carried in box will determine how many brackets are needed to mount box!