General description Our reusable and washable foam filter cartridge is designed for Intex type S1 pools, aquariums, and spas. It features a high-density mesh structure that effectively filters a wide range of contaminants, including leaves, grass, hair, debris, pinewood, insects, and other floating substances. This durable foam filter is made from high-quality sponge material, ensuring flexibility and resistance to deformation, making it an environmentally friendly choice for pool maintenance. Technical specifications Size: 10.6 x 7.5 cm Center hole diameter: approx. 4 cm Usage To maintain optimal filtration, it is recommended to replace the filter every two weeks. This helps keep your pool, aquarium, bathtub, and spa clean and ensures better filtration performance.