Hot Water Circulator Pump Pump Type Maintenance Free Series PL HP 1/6 Voltage 115 1 Phase Inlet/Outlet Size 1-1/2 In. Connection Style Flanged Face to Face Dimension 6-3/8 In. Max GPM @ Head 38 gpm @ 1 ft. Best Efficiency GPM @ Head 20 gpm @ 22 ft. Min GPM @ Head 7 gpm @ 35 ft. Shut-Off 37 ft. Housing Material Cast Iron Drive Type Direct Length 8-5/8 In. Width 4-3/8 In. Loop Configuration Closed Flange/Union Included No Includes -