Hot Water Circulating Pump Hot Water Circulating Pump HP 2 Voltage - Pumps 208 to 230/460VAC Phase - Pumps 3 Connection Style Flange Inlet/Outlet Size 2 In. Shut-Off 45 ft. Housing Material - Pumps Cast Iron Max GPM @ Head 160 gpm @ 29 ft. Series E-60 Face to Face Dimension 14 In. Best Efficiency GPM @ Head 105 gpm @ 40 ft. Min GPM @ Head 30 gpm @ 45 ft. Drive Type Direct Height 14 In. Length 21-3/8 In. Width 9-7/8 In. Loop Configuration Closed Flange/Union Included Yes