At National Custom Hollow Metal Doors and Frames, our fire rated doors and frames are subjected to rigid manufacturing standards, earning the label of Warnock Hersey Fire Doors and Underwriters Laboratories (UL). We use the industry standard galvanneal (steel with a galvanized coating that has been annealed to better accept paint) or stainless steel which is first cut to the specific size needed for manufacturing.
Whether destined for heavy-duty industrial environments, hospitals and laboratories, restaurants or storefronts, our doors are expertly crafted to precise tolerances and exact specifications out of materials specifically chosen to ensure superior durability, appearance and ease of operation.