Standard Bore Size For Residential Door Lock

This is the backset dimension bore a 1 inch hole in the edge of the door located on the centerline of the 2 1 8 inch hole. Cross or edge bore. The door has a bore that is around 1 inch in length and it extends from the door edge and goes through the bore hole.

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The standard sized bore hole is 2 1 8 in diameter.

Standard bore size for residential door lock.

Bore a 2 1 8 inch hole through the door. If you have a door that already has a bore hole in it measure the diameter of this hole to make sure the back plate or rosette will fit. The center of this hole should be located 2 3 8 inches or 2 3 4 inches back from the edge of the door. Still more exceptions standard interior slab doors are 80 inches tall.

Installation at 40 inches is common on affordable homes mobile homes and production homes. 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. Many older doors had bores that were been smaller. Lock bore the diameter of the hole for the lock body.

The standard bore is 2 1 8. There are many types of door locks which can influence the lock hole size as well. The standard measurement for a bore hole is 2 1 8 inch in diameter and the standard measurement of a cross bore is 1 inch in diameter. If you re installing several doors it s acceptable to drill the doorknob hole at 40 inches or centered vertically.

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. Usually the backset measures 2 3 8 inches or 2 3 4 inches. Opening heights 3 0 through 4 11 15 16 centered in door height not frame.

In addition to the two cross bores a door can be prepped for one of 3 different types of latches. The cross bore is the place where the latch has to be installed. This cross bore is where the latch is installed. Exterior doors are typically 1 3 4 inches thick while interior doors measure 1 3 8 inches thick.

First doors can usually be re drilled. The small hole along the edge of the door frame usually measuring about 1 inch in diameter. Through the edge of the door there is a 1 cross bore that extends from the edge of the door through the bore hole. Fit into the door prep shown above.

The latch will fit into the 1 inch hole.

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