Optional AccessoriesTABLE 1SEP−100 to SEP−230Gas Part No. − Stainless Steel SEP−100S SEP−115S SEP−145S SEP−175S SEP−200SHeatingPerformance Part No. − Aluminized Steel SEP−100A SEP−115A SEP−145A SEP−175A SEP−200AHanging Bracket 100001381 X X X X XKitHigh AltitudePressure Switch 176722600 X 1 X 1 X 1 X 2 − − −Kit165296401 XLPG/Propane Kit 165295202 X X X165295205 X1652952031 SEP−100 through −145 require replacement combustion air inducer pressure switch at altitudes over 5500 feet above sea level.2 SEP−175 requires replacement combustion air inducer pressure switch at altitudes over 2500 feet above sea level.TABLE 2SEP−230 to SEP−400Gas Part No. − Stainless Steel SEP−230S SEP−250S SEP−300S SEP−345S SEP−400SHeatingPerformance Part No. − Aluminized Steel SEP−230A SEP−250A SEP−300A SEP−345A SEP−400AOptional Accessories − Must Be Ordered ExtraHanging Bracket 100001381 X X X X XKit165296403 X XLPG/Propane Kit 165295203 X X165295206 X3