Operating and Mounting Instructions FAQs

Q: How do I know if my door is right–handed or left–handed?


Stand as though you were outside the room. If the hinges are on the left-hand side, you need a left-handed door set. If the hinges are on the right, you will need a right-handed door set. 

Q: I would like to replace my Master Lock handle set. Will your current handle sets fit the holes already in my door?


They might. Master Lock produced a variety of handlesets in the past. Our current handlesets have an 8 13/32" distance between the handleset bore and the lower mounting screw. If your current handle set has a different dimension, you'll need to plug the current hole and re-drill.

Q: Where can I find the operating and mounting instructions of my lock?


View the operating instructions for Door Hardware products.

Q: How long does it take to install new door locks?


Most people can replace their door locks in about 15 - 60 minutes. If you’re having trouble with installation, consider contacting a local locksmith.

Q: How do I remove the knob and rosette to access the door hardware mounting screws?


To access the mounting screws:

  1. Insert the included tool into the hole in the rosette and press the pin at the base of the knob.
  2. Pull the knob off.
  3. Remove the rosette by unsnapping from the mounting plate. You can pull the tab or carefully pry.

Q: Where can I find the instruction sheet of my Master Lock product?


View the instruction sheets for Door Hardware products.