The Unicel C-4326 Hot Tub Spa Filter is a genuine new filter cartridge designed specifically for hot tubs. Made by the trusted brand Unicel, this filter is suitable for keeping your hot tub water clean and crystal clear. With its model number C-4326, this filter is a reliable and essential part of maintaining your hot tub's overall health and functionality. Whether you are looking to replace an old filter or simply want to ensure you have a spare on hand, this Unicel filter cartridge is a quality choice for your hot tub spa needs.