FRS-93 T EL safe is designed to store money and valuable documentation in the office and at home and is recommended to be used indoors to prevent documents from being destroyed by fire. The case and door of the Valberg fireproof safe consist of two walls welded together, the space between which is filled with the patented composition of fire resistant concrete. The design used a thermal lock that provides fire resistance in the area of the door of the safe and prevents the passage of heat flow.