Pentair 075284 Quick Flange Replacement Kit Pool and Spa Heater Quick flange replacement kit Fits Pentair MiniMax Plus, PowerMax pool and spa heater models 150, 200, 250, 300, 350, 400 Also fits Pentair MiniMax pool and spa heater models 91 to 01-97 Kit includes quick flange unit, four bolts, four washers, two 2-inch bushings, two 1-1/2-inch bushings, two sleeves