How it works: The pleated design increases the filtering surface area, thickens the membrane, and has a strong contaminant absorption capacity. Contents: Filters impurities and ensures clean and fresh water. Dimensions: Outer diameter: 110 mm/4.33 inches; Total height: 82 mm/3.23 inches. When to replace? It is recommended to replace the filter element every 3 to 6 months for an optimal experience. The spa filter removes dirt and impurities and ensures clean and fresh water. Model for FD2089, Filter area (square feet): 0.4 m². Upper material: ABS. Filter cartridge compatible with MSPA models: Uscany, Elegance, Camaro, Alpine, Blue Sea and Silver Cloud. Multi-ply design: The pleated design of the filter element High flow rate ensures lower pressure drop than other filter elements and longer filter cartridge life. Contents: 4 filter cartridges Keep your pool water clean and fresh with this high-quality replacement filter cartridge. It helps keep your spa clean. The filter cartridge