The Hef-T-Foot FF-250-S is a 9.8 in. rubber base with strut inserts that is used to support small pipework and runs of cable tray. The FF-250-S dimensions are 9.8 in. L x 7.28 in. W x 3.94 in. H. The galvanized strut insert dimensions are 9.8 in. L x 1.6 in W. x .83 in. H and are attached to the rubber with industrial adhesive.