The pool filter replacement is compatible with models PWW35L, 4CH-935, and 817-4035. Designed with 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 maintain clean water in your hot tub or swimming pool and reducing the frequency of filter maintenance. This replacement filter features 25% thicker filter fabric, break-resistant end caps, and a reinforced inner core for enhanced structural stability. It is engineered to withstand normal use without cracking or collapsing. Built for durability, the filter helps keep contaminants out of clean water. Maintenance is simple—remove and rinse with water as needed. Material: Plastic Color: Blue Package Contents: 2 x Pool Filters Note: The package includes only the items listed above. Other products are not included. Due to light reflection and differences in display screens, the color of the item in the image may vary slightly from the actual product. Measurement tolerances may vary by +/- 1-3 cm.