General description The Set of 4 Intex Type H Pool Filter Sponges are reusable and washable foam filter cartridges designed for swimming pools and spas. These filters effectively collect dirt, dust, hair, and other debris, ensuring cleaner water for your pool or spa. Technical specifications Compatible with: Intex Type H Material: Sponge Color: Blue Dimensions (H x D): approx. 10.2 x 9 cm Center hole diameter: approx. 30 mm Contents: Available in packs of 2, 4, 6, or 8 filter foams Usage Filters should be replaced approximately once a week for optimal performance. Foam filters can be washed and reused multiple times, lasting about 2 months with proper care.