Our ACM doors are made with na aluminum tubular structure, where a structural calculation is Always made according to the model and size of the door. This tubular structure brings to our doors the lightness and resistance of aluminum, combined with the each structure has. We have a highly resistant and extremely light door. We use specially for our doors, with thicker walls and internal structural reinforcement. Our doors remain firm, regardless of their height or with, functioning 100% throughout their useful life.