A curtain wall is an outer covering of a building in which the outer walls are non structural but are attached to the building structure and used to keep out the weather. Because the curtain wall is non structural it can be made of a lightweight material (e.g., aluminium -framed walls containing in-fills of glass, metal panels, or thin stone), reducing construction costs. The use of glass as the curtain wall has the advantage of allowing natural light to penetrate deeper within the building. Sahab Aluminium  offers a variety of systems, which allow even the most innovative curtain wall concepts to be realized supremely well architecturally.