Square Flange motors have a square "face" where the motor mounts to the pump with 4 non-threaded bolt holes to attach the pump and a threaded shaft. 3/4 HP - Full Rated. 48Y motor body diameter is 1/2 smaller than 56Y. Arrival time will depend on your location. If you have any questions, feel free to ask.Smith SQ1072 0.75HP 115/230V 48Y Frame Square Flange Pool Pump Motor" is in sale since Sunday, April 4, 2021. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Pool Equipment & Parts\Pool Pumps".281" and is located in Bloomfield, Connecticut. This item can be shipped worldwide.