Full duty fume hoods in space and energy saving sizes of 30", 36", 48", & 72" widths. UniFlow CE AireStream models are low flow constant volume fume hoods that require no VAV controls, no motorized baffles, no costly auxiliary air system and no special integral supply fans. These units can save 50% or more in costly exhaust volume typically required to operate a conventional fume hood. Requires Remote Exhaust Blower. Fume hood is U.L.1805 classified.