Request InfoAir Science USA LLCFORT MYERS, Fla., March 26, 2013 — Purair 5, a ductless fume hood from Air Science USA, is designed to recirculate, preventing conditioned and/or heated air from being exhausted into the atmosphere. Operator protection exceeds OSHA, ANSI and other international standards. The ductless design eliminates installation costs and allows the unit to be positioned over a sink or benchtop apparatus. A polypropylene spillage tray can be provided when required. Offered in 24-, 36- or 48-in. widths, the units operate at low noise levels. 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