Compatible with Hayward and Pleatco Filters:- This pool filter cartridge is a third-party replacement for Hayward C1750, CX1750RE, Pleatco PA175, Unicel C-8417, and Filbur FC-1294. With a 28.27" length and 8.9" diameter, it fits most 175 sq. ft. cartridge pool filters used in spas and inground pool filter systems. Trilobal Fiber Captures More Debris:- Constructed from trilobal high-efficiency filtration fiber, this pool filter traps leaves, hair, dust, and fine sediment at 50-micron precision. Its high dirt-holding capacity keeps your swimming pool filter cleaner, longer. EPA Certified Safe & Reliable:- Certified by EPA, this pool filter cartridge ensures water safety and material quality. Ideal for residential pools and spas, it maintains excellent filtration performance in various cartridge pool filters. Durable Build for High-Flow Systems:- With a 4-inch inlet/outlet, reinforced end caps, and a strong core, this pleatco pool filter cartridge alternative resists high water pressure and maintains stability. Perfect for large-volume pool filters for inground pools. Easy to Clean & Reuse:- A simple rinse restores this pool filter's performance. Designed for repeated use, it helps reduce maintenance time and replacement costs—great for daily-use pools and spa systems.