Residential steel-edge doors can hold a 90-minute fire rating similar to a true commercial door. Residential wood-edge doors can hold a 20-minute rating. Remember, the unit rating depends on all of the components used for that unit, not just the door rating.

Standard door profiles

Standard door profiles include 5 in. door stile, 5 in. door top rail, and 2 in. door frame. Narrow door profiles include 3-¾ in. door stile, 3-¾ in. door top rail, and 1-1/8 in. door frame. Both the standard and narrow door profile options include a 10 in. ADA-compliant bottom rail, which can be modified with AHJ approval.

Material and Structure

The door leaves are made from high-quality steel, which ensures both strength and durability. Inside, fire-resistant materials like fireproof boards or mineral wool are used to enhance the door’s ability to withstand high temperatures without warping or collapsing. The doors are usually equipped with fire seals, which expand when exposed to heat to prevent smoke and fire from passing through.

Opening Mechanism

A double-leaf steel fire door typically features two hinged door leaves that can either open together or function independently. One leaf may act as the active door for regular use, while the other remains closed and only opens when necessary. They often include automatic closing devices or fire door closers to ensure the doors shut automatically during a fire.

Applications

These doors are widely used in industrial buildings, commercial facilities, warehouses, and areas requiring large door openings for access, such as loading docks and emergency exits. They are also suitable for use in stairwells, corridors, and other fire exit routes to prevent the spread of fire between different sections of a building.

Steel Fire Doors are designed to provide robust protection against fire hazards, with a range of options to meet your specific safety needs. Available in Class A, Class B, and Class C ratings, these doors offer fire resistance from 30 minutes to 120 minutes, ensuring maximum safety in both residential and commercial buildings.

Standard door profiles include 5 in. door stile, 5 in. door top rail, and 2 in. door frame. Narrow door profiles include 3-¾ in. door stile, 3-¾ in. door top rail, and 1-1/8 in. door frame. Both the standard and narrow door profile options include a 10 in. ADA-compliant bottom rail, which can be modified with AHJ approval.