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 thickened advanced trilobal fabric helps capture more contaminants. End caps are resistant to breakage, and the enhanced center core provides a longer service life for the filter cartridge. Use a spray nozzle to rinse the filter cloth until it turns white during regular cleanings. Clean the filter every 1-2 months. Not universally compatible; please verify your specific model. New and high-quality filter. Designed for PWW50 hot tub and spa systems. Compatible models: - Unicel 6CH-940 - Pleatco PWW50 - Filbur FC-0359 - Waterways 817-0050 Color: Blue & White Material: Polypropylene (PP) Package Contents: 1 x Hot tub filter replacement Note: The package includes only the item listed. Other products are not included. Light reflection and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.