Maintenance Kits are designed to work with all Rainbowair Ozone Generators, Queenaire Ozone Generators, and Newaire Hydroxyl Generators. Any device that pulls air through it requires cleaning and or preventative maintenance. Consider heating and air conditioning systems, automobile air filters, room air cleaners, etc. Rainbowair ozone generators also require occasional maintenance to keep them operating at peak performance. Video tutorials on proper maintenance are available on each product page.