Entrance doors are made from 3-layered laminated aspen bricks.
There may be a glass pane built into the door leaf. Door panels are made from natural massif or special heat-insulating plates.
The door panel frame is equipped with the peripheral seal that provides for heat and isolation, performs the dustproof function as well as provides for the noiseless closing of the door.
The doors are treated with the modern waterproof lacquers and paints