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Resolution: Apartment Corridor Lock function is defined as a lock where the latch bolt operated by lever from either side, except when outside lever is made inoperative by a stop or mechanical means other than...:

What is the 4310HSA/4410HSA series closer?

Resolution: HSA - stands for Holder Scanner Activation.The HSA is an electrically controlled closer/holder designed to provide easy passage for groups of pedestrians through high traffic doors. With a constant...:

What is an astragal?

Resolution: An Astragal is an applied molding attached most commonly to the meeting edge of doors to: Protection against weather conditions Minimize the passage of light between the doors Retard the passa...:

Does the Von Duprin E996L trim require the NL drive screw be installed into the device to function properly?

Resolution: Von Duprin 98/99 NL drive screw is located in back of the 98/99 center case assembly. NL drive screw should be left in with trim lock slide plate in up position in the 98/99 exit device with E99...: