For holding tanks and vacuum systems. Virtually unblockable and self priming up to 9.8 ft. Can be mounted in most convenient part of boat. Easy to maintain and can run dry without damage. Pumps inmacerated waste. Fuse size 15 amp automotive Output(open flow) 4-3/4 gallons per minute. Wire size of 16 AWG. Max head and lift is 9.8 ft. Hose connections are  1-1/2". Volts: 12