D90 40/180-900 corrugated sheet form; has 6 ribs with 40 mm height , 180 mm rib distance and 900 mm cover width. It can be p r o d u c e d from the materials Carbon Steel, Prepainted Galvanized Steel (PPGI), Galvanized Steel (GI), Stainless Steel (St.S) and Aluminium; and preferred for roof or facade cladding as single layer, also as first or top cladding layer.