Compatible with- Filter Sponge for Intex Type S1. Filter Cartridge Sponge for Intex Type S1 Filter, for Intex Pure Spa Reusable Washable Foam Hot Tub Filter Cartridge S1 Type High Quality Material:Type H Filter Sponge. Dimensions -10.8x7.3cm. Hot Tub Filter Cartridge for Intex S1 Pure Spa Reusable Washable Swimming Pool Filter Foam S1 Type, Foam Filter Cartridge, Swimming Pool Filter Foam, Reusable Washable Swimming Pool Filter Foam Sponge Cartridge for Intex Type S1 Easy to clean and store- Pool Filter Cartridges, Easy to clean and store. Type foam sponge filter filter filter, pool filter, cleaning foam filter cleaning tool, reusable cleaning pool filter cleaning, cleaning with foam washable, cleaning, pool filter, cleaning tool, washable Sponge, no filter, sponge filter, pool filter filter, cleaning tool, foam filter Durable:The filter sponge is made of high quality sponge, which can be reused and cleaned, and can be used for a long time. The foam filter has good flexibility and high elasticity. The service life of the foam filter is longer than that of the filter element, and it can be cleaned and used many times Applicable:Pool filter foam sponge is suitable for swimming pools, bathtubs, spas, bathrooms, aquariums and other occasions. Type S1 Filter Cartridge, Pool Filter for Intex S1 Filter Replacement Filter Highly Elastic Filter Media for Inte