Fireproof doors
E, EI, EIW - Classification of fireproof doors
One of the main conditions of the buildings to ensure fire safety is fireproof door installation. Fireproof doors are divided into the following classes. Door class should meet the fire safety requirements, such as doors in corridors, stairway enclosures and passageways in other escape routes, in the case of fire the fireproof door must not be less than EI45, but the internal fireproof doors not less than EI30.