PA55 - Filter Cartridge - Hayward Easy Clear C550, open w/molded gasket - PA55 IS DISCONTINUED. WILL BE SUBSTITUTED WITH PA50 - CX550-RE - Pleatco - Height: 19-3/4 - Diameter: 7 - TopID: 3 - BottomID: 3 - Misc: URET GASKET - PA55