Product Description This cartridge element replacement is designed to use with Hayward C100 Star-Clear cartridge filter. O. D. 7 inches. Height 29.4 inches. Weighs 6 pounds. From the Manufacturer Hayward cartridge filter elements are made of a superior reinforced polyester material. Hayward elements provide a high degree of water clarity and longer filter cycles. To maintain your pool water cleanliness and clarity, Hayward genuine replacement cartridge elements are the number one choice in cartridge filtration. Hayward cartridge elements 100 square feet for C100 Series