The pool filter replacement is compatible with models PWW35L, 4CH-935, and 817-4035. Featuring a high-efficiency filtration system and excellent chlorine resistance, this high-performance trefoil fabric effectively captures dirt, hair, sediment, sand, and other debris, helping to keep your hot tub or swimming pool water clear and reduce the frequency of filter cleaning. The replacement filter includes 25% thicker filter fabric, durable end caps, and a reinforced inner core for enhanced structural stability, minimizing the risk of cracking or collapse during normal use. Designed for long-lasting performance, it helps maintain clean water by keeping contaminants out. Cleaning is simplejust remove the filter and rinse with water.Material: Plastic Color: Blue Package Contents: 2 x Pool Filters Note: This package includes only the items listed above. Other products are not included. Due to lighting effects and monitor settings, the actual color of the item may vary slightly from the image. Measurement error allowance is +/- 1-3 cm.