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Resolution: Von Duprin 98/99 exit device abbreviations can be found in the product catalog. CLICK HERE for 98/99 catalog. Most of the abbreviations found on a Von Duprin exit device box label...:

Does the 4030T closer have any drop plates available for it?

Resolution: No, the 4030T does not have any available standard drop plates. Please Note: We do have an ST for the 4030T pull side top jamb, ST-3481, which incorporates the 4030-18TJ plate. ...:

What Zero products to I use to improve acoustic (STC) ratings?

Resolution: In many homes and buildings, there is a need for sound control solutions. Examples are hospital rooms, therapy offices and sound studios to name just a few. There are numerous variables t...:

How to troubleshoot Wi-Fi Connectivity issues.

Resolution: Issues communicating with a lock or Wi-Fi adapter can come from a few different sources, please follow the below troubleshooting steps to resolve connectivity issues. Mobile Device B...:

Dutch Door Prep Continuous Hinge, 600/700 series

Resolution: The only continuous hinges available with a Dutch door prep are the 600/700 series, which is an engineering special option. When ordering a 600/700 series continuous hinge with a Dutch door p...:

Wiring diagram for L949X EU (electrically unlocked) when using the deadbolt monitor to disable outside from becoming unlocked when deadbolt is thrown.

Resolution: L949X EU (electrically unlocked) with deadbolt monitor (DM) can be found here.:

Wiring diagram for L949X EL (electrically locked) when using the deadbolt monitor to disable outside from becoming unlocked when deadbolt is thrown.

Resolution: L949X EL (electrically locked) with deadbolt monitor (DM) can be found here. :

Are the letters engraved on the D271 indicator deadbolt?

Resolution: The indicator sign for the B571/D271 is an engraved aluminum plate. :

What is the leading edge of a door with respect to door bottoms ?

Resolution: With respect to mortised automatic door bottoms (ADB) , door will sometimes be specified with a clean leading edge. This is specified for aesthetics. For mortised automatic do...:

What does "LBS" mean in my Von Duprin exit device description?

Resolution: This means Less Bottom Strike in Von Duprin nomenclature: