All of our S40 overhead doors are made of 40-millimetre thick, steel sandwich panels (sections).
The male-female construction ensures that they fit together almost seamlessly.
The front and back skins of the panels are made of extra thick steel (0.5 mm). These skins are separated by a fire-retardant polyurethane (CFC free) foam core. The panels are thermally separated. All of which results in an insulation value in the highest class of the CE standards, which will considerably reduce your energy consumption.