Pentair 070544 2-Inch In/Out Lexan Bushing Replacement Pool and Spa Heater In and out lexan bushing replacement Fits Pentair MiniMax pool and spa heater models 91 to 01-97, 75, 100 Also Pentair PowerMax, MiniMax Plus pool and spa heater models 150, 200, 250, 300, 350, 400 Include 2-inch