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 removes 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 durable inner core for enhanced structural stability, ensuring reliable performance without cracking or collapsing under normal use. Designed for long-lasting 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: This package includes only the items listed above. Other products are not included. Light reflection and differences in display screens may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement may vary by +/- 1-3 cm.