Tier1 Replacement for Dimension One 1561-00, Pleatco PDO75-2000, Filbur FC-3059, Unicel C-7367 Spa Filter Cartridge for Dimension One Spas AFFORDABLE REPLACEMENT: Replacement 1561-00 Dimension One filter for Dimension One Hot Tubs and any systems that need a 7 1/4 Inch (Outside Diameter) by 10 5/8 Inch (Length) filter INCREDIBLY SIMPLE TO USE: Easily replace the old Dimension One Spa filter with the Tier1 1561-00 Spa Filter EXTREMELY DURABLE: Durable and Washable Pleated fabric that maintains strength even when loaded with sediment, our high flow core is designed to support the filter while providing industry leading flow rates while causing less wear and tear on your pump SPA FILTER CARTRIDGE REPLACEMENT: This Tier1 Dimension One Spa filter 1561-00 can be used in place of your PDO75-2000 spa filter 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.