Today, there are a lot of steel entrance doors on sale, which differ not only in price, but also in quality. Conscientious manufacturers of steel doors make them from high -quality steel and install strong and reliable locks, but, unfortunately, there are many fakes, which can be opened in seconds without the use of a complex tool. A high -quality metal door should weigh at least a kilogram of eighty and is made from two millimeter or thicker steel. If the weight of the metal door is thirty kilograms, then it will be able to protect it not from thieves, but that from a draft. If the loops of the metal door when closing it do not go inside the door leaf, then anti -detergent pins should be installed at the door, which will not allow the attackers to penetrate, cutting off the loops inwardly.
It is desirable that at least two locks are installed on the doors, one main one, which can have additional shut -off crossbars, and a spare on which it would be possible to close the door in the event of a breakdown of the main lock. All installed locks for better hacking should be of different designs. The main castle, for example, can be a suled type, and a spare can have a cylinder shut -off mechanism. Most manufacturers, unfortunately, save and install cheap locks with a low class of stability from outside. The price of a high -quality lock can equal or even be higher than the cost of the metal door itself. It is better not to buy cheap locks of imported production, since they can only protect from honest citizens, a professional cracker can open them in a few minutes, and sometimes even seconds.