Flo-Master® XP2, 2.5 hp/4.0thp, 230v, 2-Speed, 48fr, 2" Flo-Master XP2 pumps easily outperform every other 48 frame pump on the market while utilizing the same space requirements. Having a shut-off head of more than traditional 48 frame spa pumps, but less than 56 frame pool pumps, these unique pumps have been designed for today's large, heavily jetted spas requiring increased flow.