Cartridges are to be used with our Optimum 4000, Restorator, and Restorator DUO systems.
High-Output 120-Day Cartridges
#90-4120 Series (12/case)
Neutral Standard 90-Day Cartridge
#90-4090 (12/case)
Industrial Cartridges (Rated at 270 hours)
#90-5150 3X Industrial (12/case)
#90-5150-85 S.O.S. (Smoke Odor Solution) (12/case)