Reusable Washable Filter: Replace your paper filter cartridge with these reusable foam filters to reduce maintenance costs. Designed for routine pool care, these filters are washable and can be reused multiple times, offering a cost-effective alternative to disposable cartridges.Long Working Time: While the initial cost is slightly higher than a standard paper cartridge, this foam filter provides extended use and outlasts traditional cartridges.Durable: Constructed for longevity, this foam filter withstands repeated use and can be cleaned and reused several times.Reusable Washable: Instead of replacing a paper cartridge weekly, simply rinse the foam filter and reinstall it for continued use.Keep Water Clean: Effectively helps maintain clean and clear pool water.Fitment: Designed for Type A filters. Size: 20 x 10 cm (Approx) Center Hole Drilled: 4 cm (Approx) Note: The compressed product requires up to 2 hours to fully expand. Material: Sponge Color: Blue Package Contents: 8 x Filter Sponge Only the listed items are included; other products are not part of the package. Note: Lighting and display settings may cause slight color variations between the image and the actual product. Measurement error is +/- 1-3 cm.