This popular aluminum ventilator is supplied with an internal closure to open and close the vent. Just slide the lever to open & close vent.
Back has four 2" diameter holes to allow flow of air.
Can be used on cargo trailers, horse trailers and dry freight trailers.
Front & back are aluminum. Insert is zinc plated steel.
Weight - 1 1/2 lbs.
Shipped 25 per Carton.