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DE Series Lead-Lined Doors

DL-LL Lead-lined doors and frames provide protection from gamma rays and x-rays to provide maximum radiation protection in hospitals and healthcare clinics. These doors have the same outward appearance as other hollow metal doors to deliver a common aesthetic, specified to up to Level heavy duty 16 gauge (18 gauge available). Optional heavier duty DE-LL Series available for 14 gauge door requirements.


Strength, durability and ease of installation

  • DL/DE-LL doors include steel stiffened cores with a standard 1/16" lead barrier
  • Square edge design allows for non-handed inventory control in local distribution. Optional lock edge bevel 1/8" over 2" (~3˚)
  • Hinge and lock edges are reinforced with continuous 16 gauge steel channel the full height of the door, welded at a max 5" OC (optional 10 gauge hinge and 14 gauge lock channel with DE Series)
    • Universal standard/heavy weight hinges are used with hinge fillers to allow for easy modification from heavy to standard weight hinge preps
    • Standard visible edges may be filled seamless, intermittently stitch welded and filled, or continuously welded and filled
  • Top flush and bottom inverted channels provide excellent door stability with 16 gauge steel channels, projection welded at a max 2-1/2" OC
  • 16 gauge mortise or cylindrical lock reinforcements are of an integral type in accordance with ANSI A115 standards
  • Various light and louver sizes are available with light kits standard (no glass unless noted)
  • Standard cold rolled steel in 18, 16, or 14 gauge skins, with optional A60 galvanealed. G90 available in 16 or 14 gauge

Exceeds industry standards

  • Republic is SDI Certified through regular audits to ensure manufacturing, performance and quality standards set by the Steel Door Institute
  • Overall door construction exceeds ANSI A250.8-2017 (SDI-100), the standard set by SDI specifying sizes, design, materials, construction, finishing and performance for standard commercial steel doors and frames
  • SDI Membership communicates compliance with industry standards including ANSI/SDI A250.8, ANSI/SDI A250.10 (Prime paint), ANSI UL 10C (Fire), UL 1784 (Air leakage), ANSI/SDI A250.4 (Physical endurance), ANSI/SDI A250.6 (Hardware reinforcing), ANSI/SDI A250.3 (Finish coatings), ASTM A653 (Galv; All Tornado products are galvanealled), ANSI A115 (Locations) and SDI 117 (Tolerances)
  • Doors meet the broadest fire rating requirements; they are listed for installations requiring compliance to both neutral pressure testing (ASTM E152 and UL-10B) and positive pressure standards (UL-10C)
  • Factory-applied baked-on rust inhibiting primer meets ANSI A250.10-2011

Typical applications

Lead-lined doors and frames provide protection in radiology areas of hospitals and healthcare clinics.

Technical Data Guide

For more information, download the Republic Technical Data Manual.

  • DL/DE-LL Series (Pages 36-38), paint (p 117-118), miscellaneous TOC (p 107), standard hardware locations (p 121-130), specification 08110 (p 36, 131-135)