General description The Set of 4 swimming pool filters foam filter for Intex type S1 is designed to keep your swimming pool, aquarium, and spa clean. Made from high-quality sponge material, these reusable and washable filters serve as an ideal substitute for disposable filter paper, helping to reduce costs and waste associated with regular filter cartridge replacements. Technical specifications Dimensions: 108 x 73 mm (L x W) Material: High-quality sponge Compatibility and accessories Compatible with Intex Type S1 and most pool filters on the market Usage Place the sponge cover directly over the water inlet of your filter Recommended replacement frequency: once every one to two weeks for optimal filtration Other information Good elasticity and strong tensile force Fast dust filtration speed and high filtration rate Improves biological filtration and keeps water clean and fresh