Door locks are designed primarily for functionality but in addition to providing security their appearance is a consideration.
Standard door lock measurements.
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How to measure your existing standard interior door size.
Use the try square to make a light 3 inch long horizontal line perpendicular to the grain inward from the mark.
Shop online for all types of door locks and other door hardware.
Standard door frame size.
The backset is the corresponding vertical mark needed to center the knob.
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Many older doors had bores that were been smaller.
All standard bored locks ansi 115 2 161 61l type for mortise lock ansi 115 1 86 type all locations must be altered 3 8 lower and standard strike asa type.
Most of the current locks require the standard 2 1 8 bore.
If one wants to replace their locks on doors that have smaller diameter holes there are 2 options.
To measure your existing door you need to take a measuring tape and measure from the bottom of the door to the top of the door most common doors measure.
The standard door lock size varies with the style and design of the door.
The frame extends beyond the panel and is installed into the rough opening.
The average measurement of 36 by 80 inches refers to the door panel itself not including the frame.
The standard door lock hole size can be different for different types of locks doors and other such attributes.
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Opening heights 3 0 through 4 11 15 16 centered in door height not frame.
The standard bore is 2 1 8.
The rough opening should be at least inch wider and inch taller than the door frame.
On multipoint locks these are normally in 5mm increments such as 30mm 35mm 40mm 45mm 50mm and so on.
Exactly the same as with all locks the backset measurement is the distance from the front face of the lock to the centre of the keyhole and or follower on multipoint locks these are always in line so both should measure the same.
Measure up vertically from the bottom corner of the door and make a mark on the edge of the door at the desired height.
Then you need to measure the width most common width are 2 6.
Look at pictures of different door lock types to find models that match your style.
The standard size for an exterior door is 80 inches 6 feet 8 inches by 36 inches 3 feet.
Require no door prep.
Therefore when you make your choice you would want to know the details of the door including the size of the hole.
Standard door lock hole size types of features.