Barn air inlet PSAI

for ventilation

.The energy free counter balance air inlet uses static pressure created by ventilation fans to open the baffle and allow fresh air into the barn - no pulleys, chains or power units are required. .Inlet housing and door manufactured from polyethylene plastic. .Baffle and door insulation are manufactured using rigid CFC-free styrofoam insulation. .Adjustable corrosion proof counter balance slides along on heavy stainless steel wire, and is shrouded with PVC plastic for corrosion protection. .The insulated winter storm door has stainless steel hinges, and may be opened to any angle. .A mesh screen over the intake prevents birds from entering the inlet.