OmniAire 2200C is a construction grade negative air machine with two speeds, strong housing and full size, 12” deep HEPA filter. This is a powerful, well constructed and reliable air filtration machine with many accessories to assist you on your projects. OmniAire 2200C housings have a durable finish and are structurally strong. They are individually made with galvanized steel, closed end riveted construction. All seams are silicone sealed before and after riveting to assure that contaminated air does not bypass the HEPA filter.