Scheduled maintenance - Thursday, July 12 at 5:00 PM EDT
We expect this update to take about an hour. Access to this website will be unavailable during this time.
Ventilation is the mechanical system in a building that brings in fresh outdoor air and removes the contaminated indoor air. In a workplace, ventilation is used to control exposure to airborne contaminants by removing fumes, dusts, and vapours, in order to provide a healthy and safe working environment.
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