W3002
Square hole ventilator. Holes 12mm square with 6mm web. Sizes 150mm x 75mm, 300mm x 100mm, 600mm x 200mm from widths 75mm, 100mm, 150mm, 200mm, 250mm or 300mm in cut lengths up to 2m. Other sizes made to order. Supplied plain or drilled for fixing. Anodised.