Smoke protection doors

Smoke protection doors are installed on escape routes in buildings (premises) to reduce the spread of smoke. They are manufactured with a wooden frame.
Designations according to STB 1647-2006: DV2 DG, DV3 (DG, BC, DO), DV4 DG, DV5 (DG, BC, DO).

The characteristic of door sides corresponds to STB 2433-2015. However, the smoke-tight doors are provided with compulsory accessories:

availability of a door closer;
The presence of a threshold or a drop-down threshold;
latch or thumbwrench;
seal in the gates;
in glazed doors, the glass must be reinforced, tempered or laminated.
In terms of smoke permeability there can be:

one-sided;
bilateral.
Large selection of finishes for all interiors:

HPL/CPL plastic,
veneer,
polyurethane enamel,
polypropylene.
The doors are complete with:
Fixed or lowered threshold;
Closer;
The lock is mechanical;
The latch is electromechanical;
Sealing gasket around the perimeter of the box;
Antipanic system.