Combined Locks

Odnoramnye door frames, attached to the wall opening by means of anchor bolts and construction foam, should be attributed to the "Budget" version of metal doors, providing a rather illusory protection against ill-breaking. Are more secure metal door with a box consisting of two independent frames. When installing metal doors, they "put on" on the wall opening on both sides and bound together by steel bands. Along with anchoring such a combination makes it impossible to "jack" extrusion of the box with a door. To a greater degree of security of the premises provides quality installation of metal doors, properly fitted locks and burglar alarms. Today is produced by domestic and foreign manufacturers of locks, steel doors can be divided into cylinder, lever, pump, electromechanical, electronic and combined. Keys cylinder locks, compact, number of possible combinations of secret pins in the core of the castle itself is huge and the core is easily changed in case of lost keys without replacing the entire mechanism.

At the same time, the whole secret part (pins) are very vulnerable to "Brazen" hacking the core. Zami lever is almost impossible to knock out or drill. But the key lever mechanism highly overall. All lever mechanism equipped with transom "crab" system, locking door leaf in a box by retractable bolts in two or four directions. Combined Locks steel doors are two mechanisms in one case.

It may be two-cylinder mechanism, two lever mechanism or a combination thereof. Electromechanical locks simply represent a lever mechanism that unlocks with the actuator. And the electronic locks are opened by coded transmitters, cards, and sometimes units which recognize the host fingerprint. This category includes locks of invisibility, the location of which it is impossible to determine because of the lack of key slots, and recognize the device may be located as a steel sheet door leaf, and mounted in the adjacent wall. While considered to be the best installation in metal doors of three locks: a cylinder, lever and lock-stealth. However, worth remembering that for an experienced cracker and it will not be impassable barrier, but only time will significantly increase the break-in. Therefore, along with a good set of locks is to connect the alarm system. Metal doors, depending on the use of paint or powder formulations of veneer decorative overlays. As a decorative facing in the manufacture of metal doors use a set of wooden slats, laminated fiberboard, lacquered or painted wooden cards and mdf various configurations and colors. Optimal for metal doors, wooden deservedly considered cards and mdf. And finish steel doors mdf today is more popular because it does not require periodic maintenance, resistant to weathering, affordable and has a great variety of design performance.