what is positive latching hardware?

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Panic Hardware and Fire Exit Hardware are two different types of exit devices, and the proper selection is determined by code requirements. Panic Hardware is an exit device which is tested for u...
The most obvious difference (in the device) is the lack of mechanical dogging on a Fire Rated Device.  There are some internal parts that may be different and the method it is secured to the d...
Power Boost is a positive latching feature that increases the latch force, to over come building stack pressure or door weather stripping, etc, if the door stops before coming completely closed. T...
The Von Duprin Guard-X exit device is not fire rated because the deadbolt is not spring loaded. Therefore, there would be no positive latching as required on a fire rated opening. 
Ives SB360 surface bolt at top and bottom are the only flush bolts approved for use on H-Series hurricane FBC or NOA applications? The only approved latching hardware for inactive leaf of pairs w...
Industry standards for hollow metal frames installation tolerances have been developed by both the SDI (Steel Door Institute) and HMMA (Hollow Metal Manufacturers). Both standards are based on the ...
Follow these questions to determine which Von Duprin electric strike model you have 1. What type of hardware is latching to the electric strike?   2. Single or pair ...
See Catalog to identify specific model: Von Duprin Electrical Security Products and Accessories Catalog
The 20 minute Fire Rating is a valid label and are commonly referred to as "Smoke and Draft control door assemblies". Depending on the local fire code and the openings's applica...