Alpine Spas Replacement Cartridge Filter Element
Has a semi-circle handle at the top and a coarse thread spigot on the bottom.
Used as a replacement element for the following Alpine Spa models:
San Marino, Santorini, Monaco, Mont Blanc, Whistler, Blackburn, Makalu, Montana, Vermont, Summit, Matterhorn, Sierra, Lucania, McKinley, Vancouver, Munro, Everest and K2.
Also used in Sun Spas (sometimes sold as Escape Spas).