Laminated style dock bumper provides durable, economical protection for your loading dock and trailers. Weather Resistant Yes, Dimensions W x D x H in. 11 x 6 x 20, Material Type Fabric-reinforced rubber, Mounting Hardware Included No, Product Style Dock bumper. Provides durable, economical protection for your loading dock and trailers Units are constructed of fabric-reinforced rubber from recycled truck tires Pads are laminated between painted structural angles and held together with 3/4 in. steel tie rods Installation is quick and easy by bolting or welding units to dock Width is bolt hole center to bolt hole center Bolt holes are 13/16 in. dia. Installation hardware available sold separately Recommended installation is with laminated pads in vertical position