Fire Door Hardware Manufacturer

Certified Fire Door Hardware for Global ProjectsWhen securing a commercial or industrial building, the integrity of a fire door assembly is only as reliable as its hardware components. As a leading fire door hardware manufacturer, D&D Hardware understands that every hinge, lock, and closer plays a c

D&D Hardware is excited to announce our participation in the 139th Canton Fair, which will be held from April 15 to 19, 2026 in Guangzhou, China. We sincerely invite customers, partners, and industry professionals from around the world to visit us.

Introduction: Cycle Testing Is a Measure of Real Service LifeIn professional door hardware specification, cycle testing is one of the most misunderstood performance indicators. While many products are labeled “heavy duty,” only standardized cycle testing can objectively demonstrate how long hardware

Fire-rated openings are used to compartmentalize a building or space to prevent the spread of flame, smoke and toxic gases. The 2019 edition of NFPA 80, Standard for Fire Doors and Other Opening Protectives, establishes the criteria that fire-rated doors and frames must meet.NFPA 80 requires side hi

Fire rated doors meet the requirements of fire resistance stability, integrity and insulation for a certain period of time. With more and more modern high-rise buildings,fire doors that can greatly protect the lives of people play a vital role.

UL is an acronym for D&D hardware which is an independent product safety certification organizations. UL develops standards by which they test fire rated door hardware to verify that it meets certain safety requirements during use, or in the event of a fire or other circumstances.