Fume Hood

A fume hood is a type of local exhaust ventilation device designed to keep users from being exposed to hazardous fumes, vapors, and dusts, most commonly found in laboratories. It consists of an enclosure with a movable sash window that captures gases and either exhausts them outside the building or filters them and recirculates the air indoors, drawing air in from the open front of the cabinet in the process. The earliest fume hoods appeared in the early 1900s, built from wood and glass to protect workers from harmful gases produced by chemical reactions, with one notable early installation from 1904 at what is now the Gdansk University of Technology in Poland still functioning more than a century later. By the 1970s and 1980s, more efficient designs using epoxy powder coated steel and flame retardant plastic laminates had become standard. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/