1、Powerful Filtration Performance: Innovative dirt lock technology, which makes the fabric absorb more pollutants than ordinary fabrics. This filter effectively removes hair, leaves, dust, sediment, sand, etc. 2、More Efficient Filtration Area: The filter element is made of PP material, easy to clean and replace, washable and reusable. Helps trap particles, increases efficiency without penalty from pressure drops, and helps reduce filter cleaning frequency. 3、Long Service Life: Unique 3 leaf filter fabric structure, easier to capture a large number of microorganisms. It's also easy to wash or clean to repair the filter. When properly maintained, this filter can last 1‑2 years. 4、Easy to Clean: It is recommended that you replace the filter every month for optimized performance. To against excessive sediments and particles. 5、Uses: Suitable for hot tubs, spas, children's pools, etc. You can enjoy clean leisure time at your spa and hot tub by using this pool filter.  1 x Pool Filter Item Type: Pool FilterMaterial: PPWeight: Approx. 717g / 25.29ozThread Diameter: Approx. 46.5mm/ 1.83in (external thread G1 1/2)Diameter: Approx.150mm/ 5.91inHeight: Approx.243mm/ 9.57inApplication: For Pleatco PWW50, for Unicel 6CH 940, for Filbur FC-0359, for Waterways 817 0050Application: For hot tub, spa, children swimming pool, etc