Product Specifications: Length: 17.4 in. Outer Diameter: 8.9 in. Inlet/Outlet Diameter: 4 in (approx. 10.1 cm). Filtration Area: 1 x 90 sq. ft. Filter Material: Triloble high-efficiency filtration fiber.

Compatible Replacement Models: The HYP-90-4 pool water filter is compatible with the following models: Vevor HYP-90-4，Hayward C900, Hayward CX900RE, Pleatco PA90, Unicel C-8409. Note: This is a third-party compatible accessory. The listed brands and models are for reference only. VEVOR is an independent brand.

EPA Certification: This pool and spa filter cartridge are EPA certified. With 50-micron filtration precision, they effectively capture hair, leaves, dust, debris, and fine particles, ensuring clean and clear water.