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, reinforced end caps, and a durable inner core for enhanced structural stability, minimizing the risk of cracking or collapse during normal use. Designed for long-lasting performance, it helps prevent contaminants from entering the water. Cleaning is simple—just remove the filter and rinse with water. Material: Plastic Color: Blue Package Contents: 2 x Pool Filters Note: The package includes only the items listed. Other products are not included. Due to lighting effects and differences in display screens, the color of the item may vary slightly from the images shown. Measurement errors may occur within a tolerance of +/- 1-3 cm.