Staircase entrance doors are made from 1,0-1,5 mm galvanized steel sheet which guarantees corrosion protection. Leaf is 60 mm of thickness, filled with fireproof, non-moisture absorption rockwool. Frame is profiled, with sticking gasket. It is possible to complete either mechanical or electronical locks. When completing doors with electronical codeword keyboard, we recommend you to use electromagnet instead of the lock; for closing the doors we reccomend a closer. Electromagnet guarantees a confident door lock and long-lasting working, because there are no moving mechanical details. Door closer guarantees a quiet door closing. Thus the doors will never be left opened, they will always close gently and quiet without any noise which is relevant for the residents of ground floor.

There are three types of steel door for staircases: single-leaf, single-leaf with an additional part and double-leaf.
The construction of the doors is easy compatible with ventilation grille which are necessary for cellar doors as well as for fanlights and extensions.

Doors thermal transmittance: 1.6 W/(m²K).