The pool filter replacement for PWW35L; 4CH-935; 817-4035 With a high-efficiency filtration system and excellent chlorine resistance, our high-performance trefoil fabric can readily eliminate dirt, hair, sediment, sand, and others, keeping your hot tub and swimming pool clean, providing clearer water, and helping to reduce filter cleaning frequency. The replacement filter has a 25% thicker filter fabric and is built with break-resistant end caps and a strong inner core, resulting in improved structural stability. There is no need to be concerned about cracking or collapse during normal use. The filter is built to last a long time and keep contaminants out of clean water. Cleaning the filter is as simple as removing it and rinsing it with water. Material: plastic colour: blue Package Contents: 2 x Pool Filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.