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User questions

What is the part # for the 4040 regular arm?
How do I set the hold open on my 4040 closer?
How to adjust a 4010 hold open arm?
In what direction should the hold open nut be pointing for a 4041 H closer, up or down?
What do I need to do to make my 4041 Reg/PA a hold open arm?
How do you order a 4110 hold open spring cush arm only?
What is the part # for the 4040 HCush arm?
When did the 4111 Cush arms become non-handed?
What are the 1460 closer arm options?

What is the part number for a full size construction control key?
Why can't I remove the control key from the core after the core is inserted into the lever?
How are interchangeable cores installed?
What is the part number for a full size interchangeable core control key?

How to order the mortise full size interchangeable core with a construction core.
How do you order the ND series lock with a small format core?
Does the Schlage SFIC rim housings accept both 6 and 7 pin IC cores?
What does the cylinder suffix BDC mean?
Is the C987 a small format or full size core?

Does the QEL retract the latch bolt and the pushpad?
What would keep the vertical rod exit devices top latch from being held retracted in the open position?
What causes am ME Series closer to creep shut (creeper)?
How do you adjust the hold open time on a 4600 (4630/4640) operator?
Why is the 2390 top latch not staying retracted when dogged?
What would cause a 4040SE not to hold the door open?
How do I change the function of the Von Duprin 7500 mortise lock from Lever ( classroom ) to NL ( night latch )?
EL Device Troubleshooting Guide
What is the Multi Point LM9300 Series?