REI 120 fire doors are created to resist fire and at the same time to present themselves as a normal interior door. In the event of a fire, its functionality is to close in order to prevent the fire from escaping. This model is designed for mounting on masonry walls. Panic door function. If you have a plasterboard wall go to rei 120 door for plasterboard.

Thanks to the particular materials used, the fire doors are able to guarantee the isolation of the environments in case of fire by blocking flames and smoke, allowing people to leave the premises in time and limiting the damage caused by the fire.
Fire doors are classified as REI doors. A number is then associated with this abbreviation (30 - 60 - 90 - 120 - 180). These numbers indicate the resistance time (expressed in minutes), for which a given door model is capable of withstanding flames.