ECM Circulating Pump, Compatible Intake Pipe Size 3/4 in, 1 in, 1 1/4 in, 1 1/2 in, Connection Type Union, Face to Face Dimension 6 3/8 in, Flange or Union Included Yes, For Use With Potable Systems Yes, Maximum Feet of Head 20 ft, Maximum Flow Rate @ 10 Feet of Head 15 gpm, Maximum Flow Rate @ 15 Feet of Head 12 gpm, Nameplate Voltage 115V AC, Number of Speeds Variable, Phase Single, Pump Type Energy Efficient, Multi-Speed, Series Family Ecocirc, Maximum Flow Rate @ 20 Feet of Head 8 gpm