About This

• [Perfect Fit & Easy Seating] Specifically designed for Hayward Star-Clear C500 and Easy Clear C550 systems. Also compatible with Pentair Purex CF-50 filter tanks. Directly replaces OEM CX500RE, CX550RE, PA50, and PA55. Direct drop-in design ensures a secure, leak-free seal with no tools required once the tank is open.
• [Ultra 5 oz+ Trilobal Technology] Upgraded with flagship 5 oz heavy-duty fabric (60% thicker than standard) featuring triangular Trilobal fibers. Captures fine debris down to 10 microns for crystal-clear water. Optimized for high-bather loads, heavy pollen seasons, and post-storm cleanup with fewer cleaning cycles.
• [Rugged Structural Integrity] Engineered with a reinforced anti-collapse core to handle high-pressure cycles from variable speed pumps. High-tensile fibers maintain pleat stability and prevent bunching under stress, ensuring maximum water flow and an extended service life up to 24 months.
• [Verified Specs & Precision] Features a 50-55 Sq. Ft. filtration area. Dimensions: 7" OD x 19-3/4" Length x 3" Open Hole. A verified high-performance replacement for Unicel C-7455, C-7656, and Filbur FC-1245, FC-1240. Please verify your existing cartridge dimensions before ordering.
• [The Swimara Professional Tier] The Swimara Ultra Series is our premier flagship choice for uncompromised water clarity. Designed for maximum dirt-holding capacity and durability, it is the ultimate upgrade for pool pros and owners seeking the highest professional standards in backyard pool health.