PLF6CH-940 Hot Tub Filter compatible with Unicel 6CH-940, Filbur FC-0359, Pleatco PWW50, and Waterways 817-0050. Please check your model for compatibility. The filter features thickened advanced trilobal fabric that helps capture more contaminants. Durable end caps resist breakage, and the reinforced center core enhances overall durability for a longer service life. Clean the filter using a spray nozzle to rinse the filter media until it appears clean. Regular cleaning every 1-2 months is recommended to maintain optimal performance. Not universally compatible; verify your model before purchase. New, high-quality replacement spa filter. Designed for use with PWW50 hot tub and spa systems. Compatible with: Unicel 6CH-940 Pleatco PWW50 Filbur FC-0359 Waterways 817-0050 Color: Blue & White Material: Polypropylene (PP) Package includes: 1 x Hot tub filter cartridge This package includes only the item listed. Other accessories are not included. Note: Lighting and display settings may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.