General description The Pack Foam Pool Filters for Intex Type S1 are designed to provide effective filtration for spas, swimming pools, and aquariums. Made from premium polyester fiber, these reusable and washable filter sponges are a cost-effective alternative to disposable paper filters, helping to keep your water clean and fresh. Technical specifications Dimensions: 108 x 73 mm (L x W) Material: Premium polyester fiber Compatibility and accessories Compatible with Intex S1 type filters Works with Intex filter pumps 28604 and 29000 Usage Place the sponge cover directly over the water inlet of your filter Recommended replacement every two weeks for optimal filtration Other information Good elasticity and strong tensile force for effective dust filtration Improves biological filtration by capturing particles and deposits