Product Info Catalog HVAC Ventilation Louvers, Vents & Turbines Mill Foundation Vent, 8 x 16-In. Mill Foundation Vent, 8 x 16-In. Request a Quote UPC: 35358508007 Manufacturer: Lomanco SKU: 345033 Model Number: 189 8" x 16" mill foundation vent, 3 hinged, die cast rust free aluminum, 8" x 8" perma coated screen attached, aluminum damper for tight closure.