✔️ PERFECT FIT & WIDE COMPATIBILITY: Direct replacement for 6CH-940, Filbur FC-0359, 817-0050, 25252, 03FIL1400, PWW50P3 (NOT for PWW50P4) Compatible with Waterway Front Access Skimmer, Pleatco PWW50P3, Unicel, Aladdin 14510, Baleen AK-9019 and more ✔️ PRECISE DIMENSIONS FOR EASY INSTALLATION: Size: 8-1/4" length × 6" diameter with 1-1/2" SAE coarse thread bottom. Features circular handle top for easy removal and cleaning ✔️ SUPERIOR 45 SQ.FT FILTRATION: Improved trilobal fabric structure traps dirt, oils and micro particles effectively. Delivers crystal-clear spa water for ultimate relaxation ✔️ EASY MAINTENANCE & LONG-LASTING: Washable design - simply rinse every 2 weeks for optimal performance. Durable construction provides 1+ year lifespan with normal use ✔️ 2-PACK VALUE SET: Includes 2 premium-quality filters for extended use. Save time and money with this reliable replacement set