Laminated style dock bumper provide 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" 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 diameter. Dock bumper measures 24" width by 12" height by 4.5" projection.