fire rated double doors
Fire rated double doors represent a crucial safety installation in modern buildings, combining robust security with essential fire protection capabilities. These specialized doors are engineered to withstand intense heat and flames for specified periods, typically ranging from 30 minutes to 4 hours, depending on their rating. The construction features multiple layers of fire-resistant materials, including mineral cores, intumescent seals, and reinforced frames that work together to prevent fire spread. Each door leaf is independently tested to meet stringent safety standards, while the center meeting stiles are designed with overlapping astragals to eliminate gaps that could compromise fire protection. The doors incorporate sophisticated closing mechanisms that ensure automatic closure during fire events, even if one leaf is held open. Advanced smoke seals are integrated into the frame and bottom sweep to prevent smoke infiltration. These doors are particularly vital in commercial buildings, healthcare facilities, educational institutions, and industrial complexes where they serve as critical components of fire compartmentation strategies. The hardware, including hinges, locks, and handles, is specifically rated for fire door applications, ensuring the entire assembly maintains its integrity during fire conditions.