Fire-rated iron custom doors combine life safety with architectural design, meeting strict fire resistance standards while offering customization. Constructed from fire-resistant steel, these doors feature intumescent seals that expand in heat to prevent smoke and fire spread, achieving ratings of 20 to 120 minutes (UL 10C). The core is filled with non-combustible materials like mineral wool or calcium silicate, maintaining structural integrity during fires. Customization includes finishes, hardware, and decorative elements, with options for vision lites (fire-rated glass) or louvers for ventilation. Design motifs can be integrated while ensuring compliance with fire codes, and surface treatments use fire-retardant coatings. These doors are essential for commercial buildings, multi-family homes, or any space requiring fire separation, providing peace of mind through certified safety and tailored aesthetics.