DU-III Blast & gastight door (4,4 bar); 900x2000 with removable threshold

DU-III single with removable threshold / double leaf shelter doors are designed for >440 (4.4 bar) blast pressure according to existing technical norms for civil defence shelters. The door leaf is made from reinforced beams with cover plates. The doors can be upgraded with armour plates for splinter / ballistic protection and specal materials for fire resistance. DU-III doors have a multipoint locking system with levers, providing improved protection against blast wave pressure and equipped with rubber seal for gas tightness. Main Specifications Blast rating: >440 kPa (4.4 bar) Gas tightness: Yes Splinter protection: optional Leaf: Reinforced beams with steel panels (optionally armour) Installation options: casting / retrofit, right/left Locking mechanism: 1x wheel with multiple locking points Removable threshold Special seal for gas tightness Anticorrosion primer