Pentair Propane to Natural Gas Conversion Kit Model 400 | MasterTemp | 77707-1411 Light Niches replacement filter cartridge engineered for

replacement filter cartridge engineered for a precise OEM fit in the Hayward SwimClear C-100S pool filter

If you need higher testing

verify your existing grid carries OEM part number 23900-0033 before purchasing — "Swimquip DE Filter" spans multiple designs and not all are compatible

it can be used in pools with salt systems

DE filters — Hayward ProGrid and other Hayward DE filters use a different grid configuration (8 full grids

Pentair Propane to Natural Gas Conversion Kit Model 400 | MasterTemp | 77707-1411 Light Niches replacement filter cartridge engineered forThe Pentair Propane to Natural Gas Conversion Kit (77707 1411) is the OEM replacement conversion kit for the MasterTemp 400LP gas heater, converting the burner system from propane (LP) to natural gas (NG) operation. IMPORTANT: KIT INCLUDES MULTIPLE COMPONENTS This listing is for a complete conversion kit (Key Nos. 3 and 4 per the Pentair exploded diagram). Verify which components are required for your specific repair before ordering to avoid duplicate