DU-IV - Gastight door

Gastight doors DU-IV are intended for installation in internal entrance openings of civil protection shelters and protective structures, as a secondary door in a vestibule, in order to prevent the penetration of toxic substances into the interior of the facility.
The door leaf is pressed against the frame by moving the handles of the locking mechanism, which, through a wedge clamping system, ensures the required airtight sealing of the product.
The products are supplied with a primer coating in brown or black color.