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Door Hardware Resources

  • How to Verify a Supplier's UL 10C Door Lock Certification (And Avoid Fakes)
    A UL 10C door lock certification confirms that a fire rated door lock has been independently tested to withstand positive-pressure fire conditions — the most rigorous fire-door standard used in U.S. commercial construction. Purchasing a lock from a supplier who falsely claims this certification puts
    2026-08-05
  • How to Choose the Right UL 10C Fire-Rated Door Lock for Your Commercial Project？
    A UL 10C fire-rated door lock is a mortise lock that has been independently tested and certified to maintain structural and functional integrity under positive-pressure fire conditions, in compliance with ANSI/BHMA A156.13 Grade 1 performance standards. Choosing the right model requires matching the
    2026-07-31
  • UL 10C vs. UL 10B: Which Fire Rating Do Your Door Locks Need?
    UL 10C and UL 10B are two distinct fire-test standards for door assemblies used in the United States. UL 10C applies to positive pressure fire door assemblies, while UL 10B applies to neutral pressure conditions. For most modern commercial buildings, UL 10C is the required standard—and the locks ins
    2026-07-29
  • What Is UL 10C Certification And Why Does It Matter for Fire-Rated Door Locks?
    UL 10C is an American standard for positive pressure fire tests of door assemblies, including the locks installed within them. A UL 10C certified door lock has been independently verified to maintain its structural and functional integrity under realistic fire conditions — including the pressurized
    2026-07-28
  • Inside D&D's Quality Control: Testing Door Hinges to ANSI/BHMA Standards
    D&D Hardware tests every door hinge to ANSI/BHMA standards through a multi-stage quality control process — covering raw material inspection, dimensional verification, mechanical cycle testing, and fire-rating validation. This article explains exactly how that process works, and why it matters when s
    2026-07-20
  • How D&D Hardware Ensures BHMA Compliance: From Raw Material to Finished Hinge
    From Raw Material to Finished Hinge: How D&D Hardware Ensures BHMA ComplianceWhen specifying door hardware for commercial buildings, architects, facility managers, and contractors face a critical question: Will this hardware perform reliably under years of heavy use?BHMA certification provides the a
    2026-07-14
  • Hotel Door Hardware Guide: Quiet Operation, Fire Safety & Aesthetics
    Hotel door hardware must deliver three things simultaneously: near-silent operation that protects guest sleep, fire-rated safety that meets international building codes, and designer aesthetics that reinforce the property's brand identity. D&D Hardware is a certified BHMA door hardware manufacturer
    2026-07-07
  • BHMA Hinges for Educational Buildings: Durability Meets Safety
    BHMA-certified door hinges are the benchmark standard for educational buildings, combining high cycle-count durability, fire-rated performance, and code compliance. For schools and universities handling thousands of door operations daily, BHMA Grade 1 hinges—manufactured to ANSI/BHMA A156.1 s
    2026-06-30
  • Door Hinge Selection for Healthcare Facilities: Safety, Hygiene & Compliance
    The right door hinge for healthcare facilities is corrosion-resistant (typically grade 304 or 316 stainless steel), easy to sanitize, and certified for fire safety with a UL 10C door hinge rating. These hinges support infection control, patient accessibility, and code compliance across
    2026-06-23
  • Top 5 Trends Shaping BHMA Door Hinges in 2026 And 2027
    The top trends for BHMA door hinges in 2026 and 2027 include the rapid adoption of corrosion-resistant PVD coatings, standardizing 3D concealed designs in commercial projects, integrating smart sensor modules, scaling up fire-rated hardware for ultra-large doors, and transitioning to eco-frie
    2026-06-16
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