The Tri-Flow Environmental Booth was designed for plant areas where dirty and/or noisy tasks need to be confined to their own workspace. The Tri-Flow Environmental Control Booth provides HEPA level filtration performance and has a MERV 16 rating. It is 99.999 percent efficient on particles 0.5 micron and larger by weight, according to the manufacturer. Perforated acoustical panels contain and absorb noise generated inside the booth. Tri-Flow Environmental Booths provide reliable and consistent capture velocities at the booth opening and throughout the booth. There is no air turbulence, no "hot spots" and no uncomfortable drafts to interfere with operator productivity.