Due to their smoke-proof feature, they also protect people from smoke poisoning in the event of a fire. These doors, also known birli emergency exit doors, of the fire department fire occupies a very large place in the regulation. It has been made compulsory to have it in many buildings https://yangnkapslleri25791.bloggazza.com/31568381/yangın-çıkış-kapısı-a-gizli-silah