The Mathews family continues National Custom Hollow Metal's (NCHM) four decade long tradition as a family-owned business in Little Rock with a focus on meeting the needs of the growing custom hollow metal doors and frames market. National Custom Hollow Metal offers an extensive range of custom-crafted stainless steel and galvanneal metal doors and frames to accommodate your project planning and expedite your building schedule. 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.
NCHM proudly offers A60 galvanneal and stainless steel doors and frames constructed to conform to Commercial and Federal Specifications. They are fabricated from premium-quality A60 galvanized steel in accordance with ASTM A525, or stainless steel in accordance with ASTM A240. Our relationships with Underwriters Laboratories, Warnock Hersey, DHI, and NAAMM provide NCHM with the most up-to-date industry standards and specifications. Straight out, our customers tell us that our doors are stronger and more durable and clearly last longer.
Each door has a self-extinguishing polystyrene core between CR A-60 galvanneal steel facings. This creates a superior barrier to heat and cold. DP Series doors are available in 18, 16, 14 or 12 gauge with heavy-gauge perimeter channels. Each of our doors is well suited for institutional, industrial or residential use in 1-3/4″ and 1-3/8″ thickness. Customers may also order other optional hardware preps, including 5″ hinge, all types of exit devices, surface and concealed door closers, and overhead holders and pivots.
Our TrustShield Lead Lined doors are available in 16, 14 or 12 gauge galvanneal or 16, 14 or 12 gauge stainless steel construction with a continuous sheet of lead from 1/32″ thick up to 1/8″ thick, laminated to door skin and a sheet of high density polystyrene. The lead sheet extends the full width and height of the door. Lead thickness is to be equal to the shielding in the adjacent wall. Due to their weight and constructions, these doors require hardware specifically designed and manufactured for this application.
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