Good FiltrationOur foam filter cartridge has a high density mesh structure that filters a wide range of impurities from the pool, it effectively removes leaves, grass, hair, slag, pine, insects and others floating materials. Dimensions: 20 x 10cm. Center hole: about 4cm. DurableThis foam filter is made of high quality sponge, which is flexible, not easily deformed, environmentally friendly and can be reused after cleaning for a long service life. Cost SavingReplacing filter cartridges is part of your daily pool maintenance, regular replacement of paper filter cartridges will lead to increased costs and waste. Washable and reusable foam filters are an ideal alternative to disposable paper filters. There is no need to replace filter sponges frequently. Widely UsedOur washable foam filters are suitable for type A and most pool filters on the market. To keep swimming pools, aquariums, bathtubs and spas clean, we recommend that you replace them every fortnight for better filtration and to keep your pool clean. Features:The cartridge sponge filter has a structure in high density knit. It can filter all kinds of impurities in the pool, effectively remove leaves, grass, hair, debris, pines, insects and other floating debris . Pool filter foam cartridge, compatible with Intex Type A. Benefits of being washable and reusable can reduce < p>your costs, reduce waste and have a longer life than paper filter elements. Specifications:diameter: 100mm Length : 200mm Aperture: 40mm Material: Sponge Package includes: 6 x Filter Sponge