3000MG Commercial Ozone generator. Rated for up to 12,000sqft treatment area. The Total Zone line of ozone generators is world renown for their quality as well as durability. The patented "spar-c" ozone module was designed to be used in the most severe disaster environments. The "Sp-Arc" ozone module has no exposed metal in the ozone producing area therefor no corrosion. If you're looking for an all-around lightweight commercial machine, the TZ-2 will do the job.