Pre-drilled reinforcing horizontal bars
- Patent No. US 11,499,309 / 11,761,202 -
Thanks to their inverted swallowtail-shaped profile, the reinforcing horizontal bars made from 0.7 mm thick galvanized sheet steel sections offer excellent resistance to lateral pressure and ensure perfect, even sliding action of the door at all times. They are also pre-drilled to enable the plasterboard sheets to be attached faster and more easily.