The pool filter replacement is compatible with models PWW35L, 4CH-935, and 817-4035. Featuring a high-efficiency filtration system and excellent chlorine resistance, the high-performance trefoil fabric effectively captures dirt, hair, sediment, sand, and other debris, helping to keep your hot tub or swimming pool water clean and clear while reducing the frequency of filter maintenance. This replacement filter includes 25% thicker filter fabric, break-resistant end caps, and a reinforced inner core for enhanced structural stability, minimizing the risk of cracking or collapse during normal use. Designed for durability, the filter helps prevent contaminants from entering clean water. Cleaning is simplejust remove and rinse with water. Material: Plastic Color: Blue Package Contents: 2 x Pool Filters Note: The package includes only the items listed above. Other products are not included. Light reflection and differences in display settings may cause slight variations between the color shown in the image and the actual product. Measurement error allowance is +/- 1-3 cm.