APPLICATION: The 72602 spa ozone system replacement is compatible with Hot Spring spa models 1994-Current, for Tiger River hot tub spa models 1995-2010, for Limelight hot tub spa models 2008-Current, and for Hot Spot spa models 2010-Current, for Caldera hot tub spa models 2010-Current. FUNCTION: The 72602 ozone system produces ozone differently than today's UV-type ozone generators. The corona discharge method produces higher concentrations (PPM) of ozone, and the concentration levels do not decrease over time as UV ozonator do. Keep your water clean and clear, while reducing the need for chlorine. PACKAGE INCLUDE: This 72602 Ozonator replacement is a complete spa freshwater III ozone system unit. The Ozonator comes with a direct connect power cord, ozone-resistant tube, check valve, and injector. EASY INSTALLATION: The Ozone system replacement is easy to install, it is installed in the spa equipment compartment and plugged directly into the control box. The bubbles the ozone generator produces will give your hot tub water a fresh smell. MATERIAL: The 72602 complete Ozone system unit is made of quality material, treated with high-temperature resistance and anti-corrosion, and easy to maintain. The 72602 spa ozone system replacement is compatible with Hot Spring spa models 1994-Current, for Tiger River hot tub spa models 1995-2010, for Limelight hot tub spa models 2008-Current, and for Hot Spot spa models 2010-Current, for Caldera hot tub spa models 2010-Current.