Only suitable for spa brands MSPA models: for Tuscany, for Elegance, for Camaro, for ALPINE, for Blue Sea, for Silver Cloud, for Castello, for Oasis. Replacement MSSpa filter cartridges , helps remove dirt and germs and ensures clean, fresh water. MSpa filter cartridge High quality replacement for hot tubs and whirlpools. It helps keep the hot tub clean. The filter cartridge is cleaned several times with a jet of water. But if it remains dirty or contaminated, it's time to change it. Outer diameter 110mm, total height 86mm, weight 143g, pressure at the top end, 6 small steam holes at the bottom end< /p> Number of parts supplied: 2 luckymeet