Features: * brand new and high quality. *Made of high quality material, and practical to use. *Reusable Washable Filter: Changing your paper filter cartridge is part of your routine maintenance for your pool and regular replacement of the cartridge can prove costly. These washable and re-usable foam filters will reduce your costs. *Long Working Time: Initial cost of this cartridge is slightly more than a paper cartridge yet will outlast a cartridge by a long way. *: This Foam filter will outlast your paper cartridges and can be washed and re-used several times over. *Reusable Washable: Advises changing a paper cartridge each week, whereas these foams can be washed and put back. *Keep Water Clean:Will be a great water cleaner for swimming pool. You should see a foam filter last around 2 months. Specifications: *Suitable for filter pumps using the type B cartridge *Replaces the B type paper cartridge *Material: Sponge *Color: Blue(As Pictures Show) *Size:14.5*4.5*25.4cm(Approx) Package Contents: 1 * Filter Sponge Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Function: Swimming Pool Sponge Cartridge Filter Can filter most impurities, pollutants, etc. Keep your swimming pool clean. Compatible with B swimming pool sponge filter. Features: Replaceable washable sponge pool filter has good flexibility and ductility. This foam filter can be reused after being washed many times and has a long service life. Low cost: Regular replacement of the filter element as a daily maintenance of the swimming pool may cause high expenses. These washable sponge pool filters can effectively reduce your costs. Material: Made of good-quality sponge, which can be used repeatedly for a long time. It is recommended to replace the Washable Foam Hot Tub Filter once a week, that is, after cleaning once a week, put it back. Application: Compatible with foam and jet pure spa swimming pool, bathroom, fish tank.