Louvres to allow air flow into structure. May be moulded AC fixed into place (horizontal or vertical) with gutter bolts and no hinged movement, moulded AC for fitting into adjustable (hinged) frames, or adapted AC sheeting cut and placed into hinged frames that allows open and closing.
Years of production/use
Prior to 1990
Brands/products
Fibrolite
Durabestos
Any AC sheeting
Residential uses
Window systems in tropical locations
Attached car ports, garages, screening
Industrial uses
Ventilation installed within for flat walling on warehouses, plant structures