The installation of ceilings and lightning supports, as well as door tensioners, is carried out through careful positioning and securing at the desired locations. First, the supports and tensioners are aligned and securely fixed with suitable fastening materials, such as screws and plugs. It is important that the supports are vertical and that the door tensioners are tightly stretched between the door frames. After installation, the stability is checked and adjusted if necessary to ensure safe and long-lasting use.