The filter helps remove dirt and germs, giving you clean, fresh water. Filter Cartridge Size: Outer Diameter: 115mm; total height: 86mm. Model for FD2089, filtration area (square feet): 0.4; cap material: ABS. MSPA spa filters: upper end: buckle, lower end: flat 6 small steam holes. Filter cartridge compatible with MSPA models: for Uscany , for Elegance, for Camaro, for Alpine, for Blue Sea, and for Silver Cloud. 1.120 ply cartridge filter, durable and tidy filters for mspa. 2 .Model: 8.6 cm (3.4 inches) long by 11.5 cm (4.5 inches) in diameter 3.Underside: 6 small flat holes for steam > 4.Filter cartridge compatible with MSPA models: for Uscany, for Elegance, for Camaro, for Alpine, for Blue Sea, and for Silver Cloud. 5. The filter helps remove dirt and germs, giving you clean, fresh water, making it a necessary replacement part for home pools.