LEV systems generally consist of a hood, ducting, an air cleaning device, and a fan. The hood captures the contaminant at its source, the ducting transports the contaminated air to the air cleaning device, which removes or neutralizes the hazardous substances. Finally, the fan expels the cleaned air out of the work area. This method is effective in controlling employee exposure to hazardous substances, reducing the risk of inhalation of toxic materials.
