Tier1 Replacement for Hayward CCX1750-RE, X-Stream, Clearwater II, Pro Clean, Pleatco PXST175, Filbur FC-1287, Unicel C-8317 Filter Cartridge AFFORDABLE REPLACEMENT: Replaces cartridges Pleatco PXST175, Filbur FC-1287, Unicel C-8317, Hayward CCX1750-RE, Waterway 817-0075N INCREDIBLY SIMPLE TO USE: Easily replaces the old filter cartridge with 175 Sq. ft. media EXTREMELY DURABLE: Measures 23 1/4 inches (length) x 8 15/16 inches (outside diameter); Top and Bottom 4 inch diameter FITS THE MODEL NUMBERS: Hayward X-stream 175, Hayward X-Stream CC1750, Clearwater II Pool Filter and Waterway Pro Clean 100% TIER1 NO WORRIES GUARANTEE: We stand behind the quality of filtration and overall performance of our Tier1 filters! Replace your filter when the pressure gauge on your filter tank reaches 8 psi above the pressure recorded when first installed. Turn off the power to your pump and bleed the excess air pressure of the system using the air valve on the filter. Remove any band clamps and/or lids to your filter. Remove the cartridge from the filter canister and dislodge any loose debris Rinse the cartridge thoroughly with clean fresh water and return it to the filter tank. Secure the tank lid and any band clamps.