National Custom Hollow Metal

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Among the industry’s leading custom lead lined door manufacturers, National Custom Hollow Metal Doors and Frames (NCHM) for over four decades has exceeded product quality and customer expectations.

We offer our TrustShield lead lined doors and frames in galvanneal and stainless steel construction to meet the needs of any project requiring radiation shielding. Just one aspect of quality control is our relationship with professional groups like Hollow Metal Manufacturers Association (HMMA).

Depend on NCHM's Expert Craftsmen for Custom Lead Lined Doors and Frames in Any Size

  1. As a HMMA door manufacturers, our skilled team of estimators is ready to answer any questions about whether products meet your specifications.
  2. Our team is extensively trained in the construction and application of door and frame products. Throughout their training they have mastered a plethora of safety, accessibility, and building code requirements for virtually any building.
  3. 3. Our lead lined doors and frames are available in a variety of sizes and lining thicknesses:
    • Doors are offered in 16, 14, or 12-gauge galvanneal and 14-gauge stainless steel. A continuous sheet of lead (from 1/32-inch to 1/8-inch thick) is laminated to the door skin and a sheet of high-density polystyrene.
    • Standard doors up to 5-feet by 8-feet contain a 1/8-inch lead lining, while doors up to 5-feet by 12-feet contain a 1/16-inch lining. Entire perimeters are reinforced with a continuous 14-gauge channel and/or prepared for specific hardware required for larger applications.
    • A 1-1/2-hour fire rating label from Warnock Hersey is offered on TrustShield doors that are 1-3/4-inches thick and contain a 3/32-inch maximum lining.
    • Upon request, we can supply a window cut-out and frame kit on fire-rated lead lined doors (maximum visibility of 100 square inches).
    • TrustShield frames up to 10-feet by 8-feet contain a 1/8-inch lead lining. Larger frames have 1/16-inch linings. Lead frames also are available with 1/4-inch lining.

Call NCHM at 800-334-3070, or contact us online for more information.