The Backset

Posted on 10.16.14

Understanding the backset and how to measure it is essential for determining the right door latch for your door.

  • Difficulty: Easy
  • Time: Under 1 Hour
  • Tools: Tape Measure

backset-with-hardware copy

What is backset and why is it important?

Backset is the length from the center of the bore hole to the edge of the door. Knowing this distance is important because it determines the proper length of your door latch. The two most common backsets are 2-3/8-inch and 2-3/4-inch.

Do I really need to measure my backset?

For the most part no! The majority of our latches are adjustable and can be easily switched from 2-3/8-inch to 2-3/4-inch. If we need to get a backset from you, we’ll be sure to ask you during the purchase process.

Here’s how to measure your backset:


If your door has no hardware.

backset-no-hardware copy
Simply measure from the edge of the door to the center of the borehole. Sometimes it’s easier to measure from the edge of the door to the highest point on the bore hole. Just be careful measuring because if you order the incorrect backset your latch will be either too long or too short and you won’t be able to mount your lock!

If your door already has hardware.

If your door already has hardware, simply remove one side of the knob or lever and measure the length from the edge of the door to the center of the lock.

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