Upgraded 5oz CCP520 Pool Filter Cartridges, Compatible with Pentair Clean & Clear Plus 520 (#160332), Replaces OEM 178585, R173578, Pleatco PCC130, 4-Pack, 520 Sq.Ft Total, Premium Media

【Perfect Fit for Filter Housing Models 】 Compatible with Pentair Clean & Clear Plus 520 (#160332) and Waterway Crystal Water 525/600 (#817-0131 / #817-0143), engineered for hydraulic alignment and leak-free sealing. 【Premium 5oz Heavy-Duty Filter Media】 Made with 5oz trilobal spunbond polyester, nearly twice as dense as standard 3oz filters. Provides higher fiber density, stronger pleat integrity, and finer filtration down to 10 microns, ensuring cleaner water and longer service life. 【Replacement Cartridge Part Numbers】Replaces Pentair OEM 178585 (single), R173578 (4-pack) and Pleatco PCC130. Also cross-references with Unicel C-7472, Filbur FC-1978. This is a compatible replacement, not an OEM product. Brand names and part numbers are for reference only. 【Precision Dimensions & Expanded Filtration Area】 Measures 7" OD × 3" ID × 32-1/16" height, tolerance ±0.1". Each cartridge provides 130 sq.ft, totaling 520 sq.ft (4-pack). 5oz pleats extend service intervals compared to 3oz filters. 【Durable & Cost-Saving Design】 Reinforced polypropylene core and bonded end caps resist collapse. Washable 5oz pleats withstand repeated cleaning, reusable for up to 24 months, reducing maintenance costs.