These louvre panels were made from 1.6mm thick galvanised steel.
Overall size 300 x 200
louvre size 25mm wide x 150mm long.
The Electrical Door panels below are made from 1.6mm GAL.
In 3 different sizes, the largest being 820 approx x 2030mm high with 20mm wide x 515mm long louvres pressed in a single row on top and bottom sections.