The Bosworth Guzzler 400 series diaphragm pumps are self-priming, capable of a 10 ft. suction lift and a 10 ft. delivery head. The pumps have reinforced diaphragms and duck bill valves, with neoprene diaphragm.LENGTH INCLUDING HANDLE: 13" ; HEIGHT: 4.5" ; WIDTH: 5.5" MOUNTING HOLES:6 1/8" DIAMETER BOLT CIRCLE WITH 1/4" BOLT HOLES