2 HP Self draining pump. Runs on 115V. Ideal for whirlpool baths, hot tubs, spas, etc. Extremely compact motor/pump assembly with exceptional flow characteristics. Comes with optional air switch control at no extra charge. (You will have to buy the air switch push button and 1/8" tubing separately if you want to use this option, otherwise you'll just plug it into a standard switched 3 prong outlet.) Comes with qty 2, 1.5" pump unions. This is a flooded suction pump, ie, it will not draw water up. The suction (intake side) of the pump must be available with water. See below for full chart. It's the 13.5Amp blue line, 321JN10 in the dims chart..