Give your Intex pool its best performance by using this genuine Intex Filter Cartridge Replacement Type H (3 Pack). These cartridges are easy to clean and made of Dacron filter material. Measuring 3 5/8 inches x 4 inches, this Type H filter fits Intex brand model number pumps 28601 and 28602 for 330 gallons per hour. For best results, replace your filter cartridge with a new one every 2 weeks. Keep your pool clean and long lasting for years to come. Genuine Intex replacement filter cartridge.