HVAC Circulating Pump, Hydronic Circulating Pump, HP 1/2 hp, Voltage - Pumps 115V AC, Phase - Pumps 1, Connection Style Flange, Inlet/Outlet Size 2 in, Shut-Off 22 ft, Housing Material - Pumps Cast Iron, Max. GPM @ Head 90 gpm @ 11 ft, Series 2400-70, Face to Face Dimension 8 1/2 in, Best Efficiency GPM @ Head 70 gpm @ 18 ft, Min. GPM @ Head 10 gpm @ 22 ft, Drive Type Direct, Length 9 7/8 in, Width 5 1/2 in, Loop Configuration Closed, Flange/Union Included No, Includes Flange Gaskets