suitable for 6CH-940 Filter for Spa Hot Tub Replacement Filter, Compatible with PWW50, FC-0359-FO SHAN RAN WANG PLF6CH-940 Hot Tub Filter compatible for 6CH-940, for FC-0359, for PWW50, for FC-0359, for Waterways 817-0050. Please check your model for compatibility. The thickened advanced trilobal fabric, helps to contaminants, end caps are resistant to breakage, the enhanced center core make the entire filter have a longer service life. Using a nozzle to rinse the filter cloth until it changes to white color under regular cleanings. Please clean the filters every 1-2 months. Not universally compatible, please check the specific model. new and Filters. For PWW50 hot tub & Spa Filter. Compatible models: For 6CH-940 For PWW50 For FC-0359 For Waterways 817-0050 Colour:Blue & White Material:PP Package Contents: 1 * hot tub filters replacement accessories 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. Please pay attention to the title and description when buying, and pay attention to the title and description when buying. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.