Before placing an order, please measure your filter at the return water and compare its size with that of this filter [applicable model] : Replace Pleatco PWW50-P3, PWW50P3, Unicel 6CH-940, Filbur FC 0359 Waterway Plastics 817-0050-01 FIL1400, 25252378, 902 [durable] the whole filter USES the unbreakable grip, ABS filling liquid. The thick filter cloth forms a sturdy and durable body, which has strong resistance and corrosion resistance. High temperature. [Foldable design] : The more the filter element is folded, the greater the capacity. Improved filtering. The inner network of three-layer laminated polyethylene is covered with a weather-resistant and waterproof top layer. Tearing can keep the wrinkles clear, the outline distinct and evenly distributed [long service life] : The unique structure of the filter cloth helps capture and remove stains. Therefore, you can easily clean the filter after use. The filter has been tested and can be used for a long time through regular cleaning. Please use this filter happily. Features: Advanced filter; Filters with a high fiber content can retain more dirt. Free-flow core technology: Better fluidity and longer filter life. Longer service life: Lower cleaning frequency, longer service life. Characteristics of the filter: Material: Polyester fiber. Outer diameter: 150 millimeters. Thread: 46.5 mm. Height: 243 millimeters. Water temperature: 2540. Pressure: 35Mpa. Replacement cycle: 4 to 6 months. Change model: Replace spa filters, Unicel 6CH-940, Pleatco PWW50P3, PWW50-P3, Filbur FC-0359, Waterway Plastics 817-0050, 25252, 378902 and 03FIL1400. Note: These filters are not applicable to the new Canadian spa (Chinese spa), but only to the original Canadian Spa