Mystaire is pleased to announce the release of Aura ductless chemical fume hoods. Each fume hood includes a microprocessor safety controller that monitors and adjusts fume hood face velocity to the user preset value. These hoods are ASHRAE 110 tested and are suitable for toxic fume and vapor containment. ESD models are available for applications involving volatile chemicals. A positive filter sealing system is installed in each ductless hood, enabling safe and easy filter maintenance and replacement. The cam-driven filter sealing system has a built-in filter position indicator and alerts the end user if the filtration bed is not properly sealed. These hoods are available in 30, 42 and 54 inch widths.