The FROG Inline Cartridge Holder is built right into the spa using replaceable mineral and SmartChlor or bromine cartridges developed by FROG. Simply open the cap, pull up the holder and snap in the cartridges.
This is a replacement holder only and does not include any mineral or bromine cartridges.
Designed for:
Caldera Spas equipped with Inline cartridge system
Hot Spring Spas equipped with Inline cartridge system
Also works with Artesian Spas equipped with Inline cartridge system.