1.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.2.Long Working Time: Initial cost of this cartridge is slightly more than a paper cartridge yet will outlast a cartridge by a long way.3.Durable: This Foam filter will outlast your paper cartridges and can be washed and re-used several times over.4.Reusable Washable: Advises changing a paper cartridge each week, whereas these foams can simply be washed and put back. 5. Keep Water Clean: Will be a great water cleaner for swimming pool. Fitment: For Intex S1 TypeSize (H x D): 10.8x7. 3cm(Approx)Center Hole Drilled: 40mm(Approx)It takes 2 hours for the compressed product to recovercolour: blueMaterial: SpongePackage Contents:24 x Filter SpongeOnly the above package content, other products are not included.Note: Light shooting 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.