Vestil Vertical Laminated Dock Bumpers 11"W x 4.5"D models V-1120-4.5, V-1124-4.5, V-1130-4.5, & V-1136-4.5 provide superb protection for loading docks & trailers. Units are made out of fabric reinforced rubber that comes from recycled tires. Pads are laminated between structural angles and held in place by a 3⁄4" steel tie rod. Bolt-on or weld-on installation is quick and easy. Installation hardware optional, see below. Recommended installation is with laminated pads in vertical position as shown in photo.