The thickness of a 1-hour fire-rated door can vary, but a common thickness for such a door is 1¾ inches (44.45 mm). This thickness is often used for fire doors designed to provide a 60-minute fire resistance rating. However, it’s important to note that fire doors can come in various thicknesses depending on their specific design and construction, as well as local building codes and regulations.
Fire-rated doors are engineered to meet specific fire resistance standards, and their thickness is one of the factors contributing to their fire resistance. To ensure compliance with safety standards, it’s essential to consult local building codes and the manufacturer’s specifications when selecting and installing fire-rated doors. These sources will provide information about the required thickness and other specifications for fire doors in your specific building or region.
