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