Pentair MasterTemp/Max-E-Therm 9-Bolt Combustion Chamber Cover

Pentair 474958 replaces the combustion chamber lid on MasterTemp and Max-E-Therm pool heaters with the 9-bolt layout. It seals the burner chamber and incorporates the one-piece metal exhaust elbow to route flue gases. This is an OEM assembly; verify your heater uses the 9-bolt lid before ordering.