1.0 HP 48fr Side Discharge Spa Flo Wet End, internal threads

The Waterway Iron Might Wet End 310-7820 is bolt-on ready and includes the impeller and internal seal. It fits the small 48-frame single-speed motors rated for 1/8 or 1/12hp, which are designed for continuous circulation in hot tubs. Details: Waterway P/N: 310-7820 Thread size: 1-1/2" (actual 2-3/8" OD) This wet end has the center intake and side discharge Unions and gskets are not included Good to know. 48-frame hot tub pump motors can be identified by the through bolt spacing, which is about 3-5/8” in the centre. On a 56-frame hot tub pump motor, the through bolt spacing is about 4-1/8” in the centre.