The Uvonair® 8-inch CD unit attacks and neutralizes odors at the source. Operates for less than a 100 watt light bulb. It eliminates odor, mold, bacteria, smoke, etc. Easy to use with no maintenance required. The Uvonair 8-inch CD unit is for areas up to 20,000 cubic ft. One year warranty.WARNING: FOR COMMERCIAL USE ONLY IN UNOCCUPIED AREAS.