5 Inch Backset


What is a Backset?

What is a backset? This is one of our commonly asked questions – and it’s also an important one! This is where you measure from the edge of the door to the center of the bore hole (the large hole where the door knob is mounted). This is a lot easier to measure when you do not have any hardware on your door, but not impossible if you do have the hardware still on. You just may have to strain your eyes a bit more.

238BacksetStandard backsets are either a 2 3/8″ backset or 2 3/4″ backset. This picture (above) shows a 2 3/8″ backset measurement, which is the most common, but 2 3/4″ is very common as well – you may find the 2 3/4″ backset is most often seen on exterior doors. If you can tell that your backset is obviously either 2 3/8″ or 2 3/4″, there are lots of brands that carry an adjustable backset making it easier for you to order.


What if you have a 5″ Backset?

5″ backsets are a little more uncommon, but I think we hear the need for some more and more these days. If you do measure and it looks like it is around 5″, that doesn’t mean there are no options. In fact there are many from Schlage and Kwikset who both offer 5″ backsets. We now have a 5″ backset option on our site when you are placing your order. That means if you find a door knob or lever that you like from Kwikset or Schlage you can select the 5″ backset option at no extra cost. Or if you are looking to order just a 5″ backset, Schlage and Kwikset both have backset latches that you can order separately. If you are looking to order just the 5″ backset latches check below:



What is a backset?

Not sure what a backset is? Wondering how to determine your backset? It’s really pretty simple. The backset is how far back from the edge of the door the hole is drilled for your doorknob to mount through. See the diagram below:


What is backset?

If you don’t have any hardware on your door, just measure from the edge of the door to the center of the bore hole (the large hole where the door knob assembly is mounted). See image above for help. You should have either a 2 3/8″ backset, or 2 3/4″ backset. The most common backset is 2 3/8″ but 2 3/4″ is quite often found on exterior doors especially.

Already have doorknobs mounted on your door? No problem, just measure from the edge of the door to the center or highest point of the rounded plate behind the knob itself, like this:

2 3/8" Backset

2 3/8\

2 3/8″ Backset shown above is 6 little marks past 2. Shown below a 2 3/4″ backset is 12 little marks past the 2.

2 3/4\

When you measure your own knob, there may be a slight variation. Just pick the one that is closest (within a couple marks on the measure tape). The variation can be caused by how deep the installer cut out the hole in your door to install the latch (part that slides in the cross bore hole and pops in and out to hold the door closed).

You can get 2 3/8″ or 2 3/4″ backsets for most any brand these days as they are standard backsets. Schlage, Kwikset, Weiser, Weslock and Sure-Loc use adjustable backsets, so as long as you have on of the two backset measurements you can adjust to fit what you have. If you are ordering Emtek, Taamba, Linnea, Nostalgic Warehouse, Grandeur or Baldwin brand locks you will need to specify one backset or the other.

Have a 5″ Backset? We can get 5″ backsets for Schlage and Kwikset brands, just give us a call to order.

Have a 2 1/2″ Backset and a box in your door instead of a standard latch? You need a mortise lock.