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“ covers for screw holes ”

RELATED FAQS

Question
Answer
Do I need to order the LCN 4040XP closer X ST-3596 to get the cover screw to secure the snap on cover to the cylinder?
No.  As of June 27th, 2018--- the cover screw is now standard in the screw packs for the 4040XP, 4040XPT, 4000T, and 4040SE so ST-3596 is no longer needed.
Will new 3347A fit in the old 3347 door prep?
To replace an old 33/3547 exit device with a new 33/3547A exit device the door would need to be modified.  The new device will cover any changes to the door prep.  See attached templates for retrof...
Will a 25R-L cover the door prep from a 18-R-L?
Yes, the holes on the door would be covered up by the 25-R-L device.
The (4) center case mounting holes are in the same location but there are some small modifications that will be needed like the 3/4" dia. hole at device CL for the main cam clearance shown o...
Can you change out a 1990 with a 1690 and would this cover the existing holes?
The 1690 device was designed to replace the older 1990 crossbar device & all  holes would be covered or filled in with set screws.
What is the difference between a 4210 and a 4110?
The 4210 and 4110 use the same door closer cylinder body. The 4210 is the security version of the 4110.