225 X 143 Signature/Spa-Quip Wide Mouth Nature 2 Microban® Replacement CartridgeStandard wide mouth Microban Nature 2 replacement filter cartridge. Has a open top and the bottom has a coarse thread spigot. The open top is designed so you can purchase a cap that will hold a Nature 2 stick in the centre of the filter. Filter dimensions: Height 225mm (not including handle or spigot), Width 143mm, Spigot ID 35mm. Commonly used on Signature Spas. These filters are made with Microban antimicrobial protection technology. Used as a