1. CERTIFIED IN THE Pool Filter Cartridges Certified by IAPMO RT against NSF/ANSI 50 ensuring enhanced material . A single pool filter cartridge with a filtration area of 90 sq.ft effectively removes hair, leaves, dust, debris, sand, and other fine particles from the pool. 2. GREAT FILTRATION POWER Pool filter cartridge utilizes advanced trilobal fibers, which have a higher capacity for water filtration compared to common pointbond fabric. This ensures a thorough removal of impurities, providing you with crystal clear water. 3. FILTER CARTRIDGE SPECIFICATIONS Diameter: 8 15/16' (227mm); Length: 17 3/8'(441mm); Top Hole: 4'(102mm); Bottom Hole: 4'(102mm); Material Area: 1x90 sq.ft. Compatible with Hayward C900, CC100, StaRite PXC95, Waterway Clearwater ll 100, ProClean 100. 4. COMPATIBLE WITH VARIOUS MODELSReplacement for Hayward CX900RE, CCX1000RE, Unicel C8409, Filbur FC1292, Pleatco PA90, 252300095S, Aladdin 19002/19002SVP, Waterway Clearwater 8170100N 8170100P. 5. EFFORTLESSLY CLEAN AND MAINTAIN Filter Cartridges are designed to efficiently remove sediment during cleaning, ensuring hassle maintenance and optimal performance. The enhanced trilobal fabric structure allows deep impurity penetration into the filter pleats. After washing, the filter is rejuvenated for peak performance.