Aluminum sills are more expensive than their steel counterparts, but paying the higher price means that you also get more real benefits from buying this and not another product. These window sills are markedly more rigid and durable. They do not require any maintenance from the building owner even if the surface of the window sill is exposed to very adverse weather conditions. In addition, aluminum, compared to steel, is much less sensitive to corrosion. Our aluminum window sills are also protected with a special film, because it is our belief that the more protection the better. The window sills we produce are from one to two millimeters thick, from 90 to 400 millimeters wide, in all colors of the RAL palette.