From a limited product range to a specification-ready architectural hardware portfolio with D&D HardwareD&D Hardware — Global Standards, Factory DirectExecutive answer: D&D helped the distributor consolidate certified product sourcing, private-label branding, technical documentation, packaging and h
READ MOREDo local building codes require UL listed mortise locks? Yes, official safety standards like NFPA 80 and the IBC state that you must use them. You need to pick the right fire rated mortise lock to keep people safe. First, make sure the lock passes the UL10C positive pressure fire test. Next, match t
READ MOREA UL Listed mortise lock offers tested fire protection for up to three hours. It meets strict safety rules to keep people safe. In contrast, a standard mortise lock provides basic security for normal doors without any official fire-rating safety approval.Architects, building managers, and builders m
READ MORENFPA 80 establishes requirements for installing, inspecting, testing and maintaining fire doors and other opening protectives. This guide explains the standard’s scope, its relationship with building codes and product listings, the essential functions of a fire door assembly, and key considerations when selecting compatible commercial door hardware.
READ MOREThis guide explains NFPA 80 fire door hardware requirements for hinges, closers, locks, latches, exit devices, coordinators and accessories. It shows how listings, installation details, positive latching, closing sequence, inspection and maintenance affect a complete fire door assembly, while helping project teams select compatible commercial hardware without treating one certified component as proof of total opening compliance.
READ MORETECHNICAL REFERENCE — COMMERCIAL FIRE DOOR HARDWAREFire Exit Hardware: What It Is, When It's Required, and How to Specify It CorrectlyA specification and procurement reference for architects, contractors, door manufacturers, and commercial hardware distributors.On a commercial project, an exit door
READ MOREIf you are preparing a fire door test, project submittal, or multi-category hardware order, send D&D Hardware your door schedule, required standards, product list, and target delivery date. Our team can help review the scope, recommend suitable certified options, organize technical documents, and coordinate consolidated supply.
READ MOREA fire door closer is not simply a device that moves a door toward the frame. It must generate enough controlled closing moment to move the leaf through its full arc, overcome hinge friction, air-pressure differences and seal resistance, and finally provide enough latching action for the latchbolt t
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