Spa Frog dispenser cartridge holder Marquis Spas part number 990-0775 or MRQ990-0775 as used in Marquis spas, also compatible with some Premium Leisure, Emerald, Great Lakes, Dynasty and other brands of hot tubs.
What's Included:
- Cartridge Holder,
- Cartridge holder O-Ring
This is the replacement insert cartridge holder only as shown in the product image.