This rooftop pipe support block measures 10 inches long by 5-3/4 inches wide by 4 inches tall and weighs 5.2 pounds. Made from 100% recycled high-grade rubber, the support offers a 750-pound capacity for securing piping, cable trays, electrical conduit, and HVAC equipment. The material is UV resistant and corrosion resistant for long-lasting outdoor performance. Features a green reflector for visibility and safety. Can be used as a curb or sleeper replacement on most roofing materials and flat surfaces.