Description Fire-rated hollow metal and steel doors are the backbone of passive fire protection in modern infrastructure. Constructed from heavy-duty galvanized or cold-rolled steel, these doors are designed to withstand high-traffic use while providing a formidable barrier against fire, smoke, and unauthorized entry. Internally, these doors are reinforced with specialized cores?such as honeycomb, polystyrene, or mineral wool?depending on the thermal and acoustic requirements of the project. Every door is manufactured with precision-welded seams and reinforced hardware locations, ensuring that the assembly remains structurally sound even under the intense heat of a 3-hour fire test. Certified to UL 10C and NFPA 252, these doors offer the versatility of custom finishes, vision panels, and louvers, making them as functional as they are safe. Key Features Maximum Durability: Resistant to warping, cracking, and rot; ideal for high-traffic areas like schools, hospitals, and warehouses. High Fire Integrity: Capable of achieving the highest fire ratings available (up to 3 hours), exceeding most wooden door capabilities. Corrosion Resistance: Made from G90 or A60 galvanized steel to prevent rust in humid or exterior environments. Security Grade: Provides a high level of physical security and forced-entry resistance compared to timber alternatives. Customizable Infill: Choose between Honeycomb (strength), Polystyrene (insulation), or Mineral Wool (fire/thermal). Hardware Ready: Pre-punched and reinforced for fire-rated hinges, closers, and panic exit devices for rapid installation. Technical Specifications Fire Rating: 20, 45, 60, 90, 120, and 180 Minutes Material Gauge: 18 Gauge (Standard), 16 Gauge (Heavy), 14 Gauge (Max) Steel Type: Galvanized (A60/G90) or Cold Rolled Steel Standards: UL 10B, UL 10C, NFPA 252, BS 476 Part 22 Core Types: Honeycomb, Polystyrene, Polyurethane, or Mineral Wool Door Thickness: Standard 1-3/4″ (44.5mm) Edge Detail: Square or Beveled; Seamless (Welded) or Interlocked Finish: Factory-applied Zinc Primer or Powder Coated RAL Colors Dimensions: Customisable within certified limits
