Hydronic Circulating Pump, Compatible Intake Pipe Size 3/4 in, 1 in, 1 1/4 in, 1 1/2 in, Connection Type Flange, Face to Face Dimension 6 3/8 in, Flange or Union Included No, For Use With Potable Systems Yes, Horsepower 1/20, Maximum Feet of Head 18...