FAQs

Question
Answer
Minimum dimensions to cutouts for glass lights: Vertical edge of door to edge of cutout = 5 29/32" Top of door to top of cutout = 6" Bottom of door to bottom of cutout = 10" Reinforcing chann...
To disassemble an X lock, remove the inside knob and unscrew the inside collar and rose.  The X lock spanner wrench (012172-000-30) can be used to depress the knob catch as well as tighten/loo...
Doors that may be slightly under 1 3/4" thick may experience binding.  To resolve simply remove the spindle springs and discard.  Alternative solution is to install the OSU ferrule kit (L583-347)....
The original 4B battery holder used with the AD and CO Series products is updated to improve performance.  The issues addressed include: -       Improved spring ...
AL-Series and discontinued D Lever-Series locks use castle nuts to hold the chassis to the spring cages and to keep the chassis positioned in the door. This causes confusion at times when the lock ...
Number of reasons could Von Duprin 55 or 88 series cross bar to sag. Attached are the reasons that could cause the cross bar to sag or not lift. The hinge case spring lifts both lever arms and t...
Authentic oil rubbed bronze finish, or finish code 613 oil rubbed bronze will wear over time due to the “rubbed” finishing method which does not allow application of a protective coating or plating...
The LCN "Traditional" series closer line was discontinued in 1980.  
The fluid in an LCN closer must not be refilled in the field. See attached Warranty and Repair Communication 
To determine the SC series, measure center to center on the closer body bolt hole mounting pattern and an overall description of the closer and arm. SC91 -- 6-3/8" x 3/4" -- unique arm SC93 -- 9-1...