January 11, 2022 2 min read
Most door latches on the market today are adjustable, so that you can change the backset between 2-3/8" and 2-3/4". This brief article will explain how to adjust the backset on a door latch. This method is applicable to all Designers Impressions door knobs and levers, as well as most Callan door knobs and levers. It may also apply to other brands, depending on the configuration of the door latch.
The vast majority of residential doors are prepped with a 2-3/8" backset (while most commercial doors are prepped for a 2-3/4" backset).
Since the door most likely will already have a hole drilled for the door knob or lever (called the "hole-bore"), you can not measure to the exact center-point of where the door hardware will be installed.
To measure the backset, follow these steps:
In almost all cases, the midpoint number should be either 2-3/8" or 2-3/4".
Locate the tab on the top of the door latch
Depress the tab
Depress the latch bolt
Pull the latch horizontally to extend to a 2-3/4" backset*
Here is a video showing the procedure in full:
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