Introduction The DU-III Blast & Gastight Door is a protective shelter door designed to withstand blast pressure exceeding 440 kPa (4.4 bar) and provide gas tightness. According to the product information published by Atmas Group, DU-III doors are designed for civil defence shelters and other protected facilities. They are available in single-leaf and double-leaf configurations. Atmas Group The door leaf is constructed from reinforced beams with steel cover panels. The design

The ATM HS-1 is a shelter hatch designed for use in protected spaces. According to the product information provided by Shelter Shop, the hatch is designed to meet and, in some parameters, exceed the Finnish norms for S1 shelters. The ATM HS-1 combines blast resistance with gas-tight sealing and is designed with an inward-opening configuration. Its construction and locking system are intended for installation in shelter structures requiring protection against blast-wave pressu

The ATM-FB4-RC4 Security Door is a multi-performance protective door designed to provide resistance against ballistic threats, burglary, blast effects and air leakage. According to the product specifications published by Shelter Shop, the door combines several certified performance classifications in a single security-door solution. Shelter Shop Bullet Resistance — EN 1522 Class FB4 The ATM-FB4-RC4 is specified as a bullet-resistant door according to EN 1522 Class FB4. This c