Compatible models: PWW50L and 4CH-949 series. Pool Filter Cartridge Replacements, This 4CH-949 filter massage pool filter could make sure the water clean and fresh. The filter efficiently removes hair, leaves, dust, sediment, sand, etc.Strong Filtration of the filter cartridge. 4CH-949 hot tub filter is made unique trilobal filtration fabric structure, durable which could make the filter cartridge achieve reusable. The filter adopts 25% thick filter cloth, which can provide strong propulsion and clear water, bringing you a relaxing and healthy enjoyment. Material: plastic colour: blue Package Contents: 1 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.