Hydronic Circulating Pump, Hydronic Circulating Pump, HP 1/40 hp, Voltage - Pumps 115V AC, Phase - Pumps 1, Connection Style Flange, Inlet/Outlet Size 3/4 in to 1-1/2 in, Shut-Off 8 ft, Housing Material - Pumps Cast Iron, Max. GPM @ Head 10.7 gpm @ 1 ft, Series NRF, Face to Face Dimension 6 3/8 in, Best Efficiency GPM @ Head 5 gpm @ 4.8 ft, Min. GPM @ Head 7 gpm @ 3ft, Drive Type Direct, Length 5 9/16 in, Width 4 7/8 in, Loop Configuration Closed, Flange/Union Included No, Includes -