This pump is a Jacuzzi J-Pump 48 frame 230V 1HP (1) Speed with a J Pump Style Wet End that measures about 2 15/16" across the threads on both the suction and pressure side connections.. Note: This Pump will Only Work in Jacuzzi J Pump Style Beveled unions. DO NOT order this pump for any other application as it will not work.... Note: The Unions this pump will work with are not common and has a beveled edge fitting.. I will include pictures of what the unions look like in the picture section of this part..