Today, the door market provides the opportunity to choose a wide variety of doors of the most diverse purpose and from different manufacturers. If you need a maximum of protective functions for your home from the door, then you need an entrance steel door. Such doors are offered in a very wide range. Based on the requirements of the client, the seller will always be able to choose what needs. But the choice of door is only the original stage. In addition, the finished door must also be installed accordingly. To date, the metal door in the railway can be mounted in four ways. The first method has the conditional name “Russian”. With this method, the door box is rigidly attached to the anchors. But, despite the fact that such a mount is very durable, it does not allow ensuring that the door frame does not overwhelm. The main problem is that after a skew, problems with the work of locks may arise. The second method is called “Israeli”. The box with this installation method is not installed as hard as in the first version. The inner space of the door frame is filled with a solution. The disadvantage here will be that the main box cannot be adjusted, therefore, if necessary, the main box is only possible to reinstall the participation of the method is a classic and is called “Italian”. The frame with this method is attached with pins, which are located at different angles. Next, the main box is attached so that the ball is the ability to adjust the entire door block if necessary. The last way is called “Italian modernized”. This method is considered the most reliable. The frame here is not P-shaped, but four-sided. Due to the four -sided frame, the necessary rigidity and gusty resistance of the entire structure as a whole is achieved. Additional sound – and thermal insulation is achieved by the use of the seal.