Pentair Filter Cartridge Replacement 100 sf | R173215 Pop-Up Heads Unscrew the old air-relief cap

Unscrew the old air-relief cap from the filter tank lid

Reusable season after season for maintenance ease and cost savings

Inspect and clean the salt cell as needed when scale buildup is present or when the system displays a check-cell warning

Align the plug and press it firmly into place so the sealing layer sits flush with the skimmer opening

or fails to close properly — conditions which reduce skimmer efficiency or allow debris to escape

Pentair Filter Cartridge Replacement 100 sf | R173215 Pop-Up Heads Unscrew the old air-relief capPentair R173215 100 sq ft Replacement Cartridge Element The Pentair R173215 is a high quality replacement cartridge filter element rated at 100 square feet of media area. It is designed for compatibility with select Pentair Clean & Clear and Predator filter tanks and restores proper filtration efficiency and flow performance. Key Features 100 sq ft media area provides long run times between cleanings. Constructed to fit compatible filter tanks with an