Keep your spa water crystal clear with our high-quality Spin-on Spa Filter Cartridges! Spin-on Spa Filter Cartridge: These inflatable spin-on spa filters are compatible with a wide range of spa brands, including CosySpa Hot Tubs, Clever Spa, Aqua Spa, Costway, All Seasons, and more. High Quality: Our spin-on spa filters are engineered for high tensile strength. The filter media, center rod, and end cap are integrated into a single unit, ensuring superior end cap sealing. The pleated structure provides a larger surface area, making the filter cartridge highly efficient. Material and Dimensions: Crafted from durable PET material and non-woven fabric. Each filter weighs 135g, measures 104mm in diameter, has a hole diameter of 60mm, and a height of 82mm. They perfectly fit most massage pools, allowing you to enjoy a safe and healthy spa experience worry-free. Spa Filter Cartridges: These cartridges effectively keep your spa water clean and clear, ensuring long hours of relaxation and enjoyment. Easy to Clean: For optimal filtration efficiency, replace the filter element every two to three weeks. If you have any issues or questions regarding our replacement filter elements, please let us know. Enjoy your leisure time with family and friends!