The subject of this article are not doors, whose task is heavy opposition to a tool like bolgarok and cutting torches. Of the necessary funds to strengthen domestic doors should recommend as follows: The thickness of the metal on the outside of the door shall be such that it was extremely difficult to open with hand tools. Brad Garlinghouse describes an additional similar source. We believe that the list of 1,5-2 mm is quite sufficient. In the canvas of a metal door to be installed stiffener that prevents the '' corner door and, moreover, blocks access to that part of the door, which contains the locks. This is necessary in order to make it impossible for opening locks, even if attackers managed to cut the outer metal sheet.
It is recommended to install additional sheets of metal at the places where the locks are attached (ideally – to the entire region fixing locks, separated from the rest of the Door stiffeners). Locks should be possible, complete with vertical rods (of course, the construction of the castle should provide their installation, 'revision' of the castle under the vertical rods of artisanal methods unacceptable), and if possible – and additional bolt groups ('deviators'). When closing the door to the loop of the box should go passive crossbar ('protivosemnye Pins'), makes it impossible opening the door after removing the hinges. Vestibule door (the part of the leaf, which when the door is closed 'lies' on the box) should be powerful enough to not give an attacker the possibility to bend sheet metal. Ideally, door should in a box.
Unacceptable gap in the closed doors between the porch and the box (including those not recommended to install seals on the porch door, the canvas that stands above the box). Installation of doors must be such as to exclude a force on the connection 'door-to-wall' and the possibility to deform the frame. In particular, it is unacceptable to the installation of the door assembly foam. We would like to draw attention to the installation of metal casings, which are part of the door frame. These frames can increase burglary doors and protect the door from breaking only if they are densely and evenly adjacent to the wall (that Thus, if the door and the wall in the first place strictly vertical, and the second perfectly aligned). Otherwise, such plat creates the possibility of pulling out the door with the box from the doorway. The ideal is to set protective metal casings in a specially slotted 'quarter' – in this case they will serve a protective function, regardless of verticality and flatness of the walls and doors. Implementation of these recommendations is almost guaranteed to provide the consumer with obtaining quality door components.
