If the installation of the casings is done correctly,

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When installing a single-leaf interior door, you will need to purchase 5 planks, while a double-leaf door will require 6. To frame the opening on one side, two and a half planks will be enough.

In appearance, they are similar to regular door frames. The difference is the projection, which is necessary for connections. This option can be used if the thickness of the door is narrower than the thickness of the wall. A special projection is attached to the longitudinal grooves of the end of the door frame.

the fasteners will be almost invisible. The structure will serve for a long period. Otherwise, if the calculation is done incorrectly, a gap remains. As a result, the structure looks unsightly.

Decorative design
Recently appeared on the building egypt mobile database market door trims for decorative design are called capitals.

The material for the casings is solid wood or MDF. They are distinguished by a variety of shapes and figured frills.

After installing such trims, the door will acquire a luxurious finished look.

Methods of fastening the structure
Often, the following are used for installing door frames:

liquid nails;
fastenings called "beaks";
finishing nails;
self-tapping screws.
Using finishing nails