There are two common backsets for residential door locks: 2-3/8″ and 2-3/4″. Not choosing the correct backset could mean the latches are too long or too short. Some brands of door hardware are shipped with adjustable backset latches which makes ordering easy.
In the U.S. there are two common backsets for residential door locks, 2-3/8" and 2-3/4". The backset is the distance from the edge of the door to the center of the 2-1/8" bore hole. We will pack your locks with a 2-3/8" or 2-3/4" latch depending on which backset you specify.
In the United States, there are two common backsets for residential door locks: 2-3/8 inches. 2-3/4 inches.
Standard Door Measurements
Lock Bore The diameter of the hole for the lock body. The standard bore is 2-1/8”. Many older doors had bores that were been smaller. Most of the current locks require the standard 2-1/8” bore.
The backset is the distance from the edge of the door to the center of the bore hole. There are two common backsets for residential door locks: 2-3/8″ and 2-3/4″.
Most deadbolt assemblies are a standard size, but you'll need to read the instructions or measure the assembly to choose the correct hole saw bit.
To determine the correct backset measurement for your door, you will need to measure the distance from edge of the door to the center of your bore hole. Two common backset measurements are 2 ¾ inches and 2 3/8 inches. At Nostalgic Warehouse, our standard measurement is 2 3/8 inches.
To determine the correct backset measurement for your door, you need to measure the distance from the edge of the door to the center of your cross bore. The two standard backset measurements in North America are 2 3/8 inches and 2 3/4 inches.
Determining the backset and overall length can be done by removing the existing latch and taking the dimensions. If the door handle or knob is still in place and you'd rather not remove it then you can measure from the edge of the door to the centre of the spindle hole (centre of the handle/knob).
A deadbolt lock is typically installed 6 or 12 inches above the key lock (roughly 44 inches from the bottom of the door). Using the tape measure, determine an appropriate spot and mark it on the edge of the door (the part through which the bolt is going to extend).
Deadbolts are typically installed 6 to 12 inches above the doorknob. Mark a line to designate the height of the center of the deadbolt. In addition to the height above the doorknob, you will also need to mark the backset—the horizontal distance from the edge of the door to the center of the deadbolt.
The most common door prep uses a two and one-eighth inch cross-bore with a one-inch edge-bore. Another popular installation uses a one and one-half inch cross-bore with a one inch or seven-eighths inch edge-bore.
Kwikset deadbolts can fit doors that are 1 3/8" to 1 3/4" standard. You can get a thick door kit to allow the deadbolt to fit on a door that is up to 2 1/4" thick.
The backset of a door knob or lever is the distance from the edge of the door to the center of the door knob or lever. 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).
What is the backset on a Night Latch? The backset on a night latch is the distance from the centre of the keyhole to the edge of your door, you will find most night latches will have a 60mm backset.
Almost ALL domestic mortice locks and tubular latches are supplied with either a 44mm or 57mm backset length. These equate to case sizes of 2.1/2" or 3" in imperial measurements.
Backset Information
When looking for any deadbolt, knob, or lever product, it is important to measure the backset of the door on which it is going to be installed. This will ensure the lock you are purchasing will fit properly. The backset is measured from the center of the hole for the lock to the edge of the door.
2 3/8 ' and 2 3/4" are standard. Some locks adjust for either backset. Nothing is universal and a quick check with a tape is always good.
Most deadbolts need a hole 2-1/8-inches in diameter for the body of the lock to fit into the door. The bolt on a typical deadbolt requires a 1-inch hole in the edge of the door.
This grading system assigns letter scores of A, B, or C to deadbolts in three categories: security, durability, and finish. The best deadbolts are graded AAA in this system. Our top choice of deadbolts, the Schlage B60, is rated grade 1 by ANSI and AAA by BHMA for the highest security rating.
Deadbolts have fewer vulnerabilities than traditional doorknob latch locks, but they are still pretty easy to bypass with the right approach. In this guide, we will discuss several popular techniques for unlocking pin tumbler deadbolts, including lock picking, lock bumping, and drilling the lock.
1) EVVA MCS
Each key has a complex rounded shape, this coupled with the magnetic element makes it an extremely hard lock to pick. The only way to gain access to the door would be for the key to be cloned, and in that case, a master locksmith would need to get their hands on the original key.