"This American Truckboxes in-frame truck box is designed to be mounted between frame and truck rails to provide low-profile access for storage of heavy chains, binders and tie-down straps. Features smooth body aluminum finish with diamond plate open lid. U.S.A. Oversize shipping charge applies. Application To provide low-profile access for storage of heavy chains, binders and tie-down straps, Mount Type Between frame/truck rail, Dimensions L x W x H in. 24 x 36 x 10, Finish Type Smooth body aluminum finish w/diamond plate open lid, Handle Type Locking T-handle."