Vent Hoods
Gravity ventilators are designed to provide relief (exhaust) and intake (supply) airflow with or without the use of a fan.
GIV
Intake Gravity Ventilator

Product Overview
Model GIV (intake) is a custom-built ventilator hood. The hood itself is 16 GA (.050) Aluminum and the base is 13 GA (.090") Aluminum. Standard speciation also includes 1/2" x 1" flattened aluminum birdscreen."