Pentair Clean and Clear Plus 420, 520, Waterway Crystal Water 425 Compatible Filter Cartridge - Pack of 4 filter-width_10 1/16 inches and Washer are sold as

and Washer are sold as a set: One (1) Bolt

This is a Hayward Dark Gray Vinyl Ring with Inserts for SP1048

This is a Hayward Replacement Retainer Rod for MicroClear and Pro-Grid DE2420 Vertical Grid DE Filters (24 Square Feet)

687 inches OD

Pentair Clean and Clear Plus 420, 520, Waterway Crystal Water 425 Compatible Filter Cartridge - Pack of 4 filter-width_10 1/16 inches and Washer are sold asThe 4 Pack of Hurricane HF7471 04 Advanced Cartridge Filters are compatible with Pentair Clean and Clear Plus 420, 520 (pre 1998), American Quantum CM and RPM 125 500, Waterway Crystal Water 425, and other compatible models. They are identical to Unicel C 7471, Pleatco PCC105, and Filbur FC 1977. The original manufacturer's names and part numbers are for reference only. Hurricane's advanced point bond filter media has tighter filtration capabilities