Cartridge element for the Jacuzzi CFR-75 filter has 193 pleats and no center core. This element has a 5-13/16" open end cap on top and a 6-1/16" open end cap on the bottom. Other Products Using This Part: 75 square foot Jacuzzi CFR cartridge filter system with 1 horsepower pump. CFR 75 sqft cartridge filter system with 1-1/2 horsepower pump. CFR 75 sqft cartridge filter with 2" threaded connections.