fireproof door with window
A fireproof door with window represents a crucial advancement in building safety technology, combining robust fire protection with practical visibility features. These specialized doors are engineered using fire-resistant materials, typically including multiple layers of fire-rated glass, steel or reinforced frames, and intumescent seals that expand when exposed to high temperatures. The window component is constructed using specially tempered or ceramic glass that can withstand extreme heat while maintaining structural integrity for the specified fire-rating period. These doors are designed to prevent the spread of fire and smoke between different building sections while allowing natural light transmission and visual access through the window. The construction typically features a fire-resistant core material sandwiched between steel sheets, with the window portion carefully integrated to maintain the door's overall fire-rating certification. They are commonly installed in commercial buildings, hospitals, schools, and industrial facilities where building codes require both fire protection and the practical benefits of visibility. The doors undergo rigorous testing to meet international safety standards and are rated for different durations of fire resistance, typically ranging from 30 minutes to 4 hours.