HF-STR3-500S8-SET Premium Pool Filter Cartridge 25021-0224S Inner and 25022-0225S Outer Set - Replacement for 500 Sq. Ft. Sta-Rite Outer and Inner System 3 S8M500 Set, Pentair 170148 Pentair housing On-lid maintenance labeling: Embossed care

On-lid maintenance labeling: Embossed care instructions stay visible for quick reference during service

Ready for routine service

You’ll spend less time chasing chlorine levels and more time enjoying clean water

Pentair compatibility and reliability: engineered by Pentair to match standard vacuum head interfaces

Safe for use on all pool surfaces

HF-STR3-500S8-SET Premium Pool Filter Cartridge 25021-0224S Inner and 25022-0225S Outer Set - Replacement for 500 Sq. Ft. Sta-Rite Outer and Inner System 3 S8M500 Set, Pentair 170148 Pentair housing On-lid maintenance labeling: Embossed careHF STR3 500S8 SET Premium Pool Filter Cartridges Intro Restore peak filtration with the HF STR3 500S8 SET, a premium inner and outer cartridge replacement for 500 sq ft Sta Rite System 3 S8M500 pools and spas. This complete kit delivers consistent cleanliness, easier maintenance, and reliable performance for residential and light commercial use. Manufactured to tight tolerances in the USA, it ensures a precise fit and long service life. List of