Semi Downdraft or Cross Draft
This proven ventilation system uses fresh air constantly moving through the enclosure to protect personnel from breathing harmful vapors.



Safe Air Operation

1. Air is drawn from outside of enclosure through filters to remove dust and dirt contaminates.
2. Pre-filtered air is then moved through the ceiling fan plenum to create a higher degree of purification.
3. The downflow of continuously moving air inside the enclosure forces harmful vapors safely down and through the exhaust plenum.