UniFlow Auxiliary Air fume hoods reduce the loss of expensive tempered air from the laboratory. Ideal for laboratories with inadequate make-up air supply. Auxiliary Air hoods come in 48”, 60”, 72” & 96” widths. Equipped with auxiliary air plenum to induce added airflow to the face opening of the fume hood. Supply air ducting and remote blower required. Auxiliary Air hoods are based on a 50% supply air to make up for room supply deficiency.