Description: HVAC Circulating Pump, Hot Water Circulating Pump, HP 1/12 hp, Voltage - Pumps 115V AC, Phase - Pumps 1, Connection Style NPT/Flange, Inlet/Outlet Size 3/4 in to 1-1/2 in, Shut-Off 45 ft, Housing Material - Pumps Cast Iron, Max. GPM @ Head 25 gpm @ 3 ft, Series S, Face to Face Dimension 6 1/2 in, Best Effi