Metal (20 / 30 mm thick single plate leaf) blast-resistant and gas-tight and splinter protection (with 30 mm plate). These doors are designed according to Finnish shelter norms for civil defence shelters and can be installed during the concrete casting or retrofitted in existing opening. 

Series of metal single leaf and double leaf blast-resistant, gas-tight and optional ballistic rated doors. The doors designed for 1 / 4.4 / 9 bar blast wave pressure and equipped with special frame which allow

installation during the concrete casting or retrofit in existing opening. 

Heavy duty blast, gastight and splinter protected door with leaf made of 25mm or 32 mm thick steel plate or a metal structure with reinforcements depending if splinter protection is required. The door frames are designed to be casted in concrete and integrated in the wall structure.

Heavy duty blast doors which includes concrete insert from special reinforced concrete for additional ballistic and fire rating. The doors were developed to withstand a very high dynamic blast wave loads and rebound forces and can be retrofitted into existing opening or casted in concrete. 

Atmas offers different options for hinged and sliding protective doors and gates for civil defence shelters, bunkers, safe rooms, industrial protected spaces and ammunition storage facilities and more.​​

Series of metal blast-resistant, gas-tight and optional ballistic rated hatches. The hatches designed for 1 / 4.4 bar blast wave pressure and equipped with special frame which allow installation during the concrete casting or retrofit in existing opening. 

Metal (20 / 30 mm thick single plate leaf) blast-resistant and gas-tight and splinter protection (with 30 mm plate). These hatch are designed according to Finnish shelter norms for civil defence shelters and can be installed during the concrete casting or retrofitted in existing opening.