Installation of the curtains on the reinforced concrete surface begins by applying marking. Determine the middle of the window opening or the center of the room if the curtain is attached to the entire wall. Metal and wooden curtains are most often produced with ready -made holes for fasteners, which must be transferred to the surface of the ceiling. In plastic products, holes are made independently, marking 10 cm on each side under them. Between the central and extreme points on the ceiling with a step of 50-60 cm, the rest of the marking is applied to fasteners. In accordance with it in reinforced concrete and in the curtain make holes. Dowels are clogged into the ceiling and mounted by means of screws of curtains.