Accession number: 1974.03.57
Date: circa 1950
Measurements: 29 cm L x 29 cm W x 29.9 cm H
Description: A galvanized steel box with rounded bottom and screened vent on the front side. An adjustable vent cover on the back allows for the air flow to be regulated.
History of Use: This unit fit in the wall of the hatchery/poultry barn. Versions of this piece of equipment are still in use. Depending on the building size there would have been multiple ventilation units installed. The screened , front side, was out and the adjustable vent cover was inside.