Standard Interior Door Backset

Opening heights 3 0 through 4 11 15 16 centered in door height not frame.

Standard interior door backset.

The two standard backset measurements in north america are 2 3 8 inches and 2 3 4 inches. Some door manufacturers carry stock doors in 7 foot and 8 foot heights and door widths from 24 inches to 42 inches. However patio doors are routinely available in 6 foot 11 inch and 8 foot heights. Deltana sdl980u5 classic round rosette tubular lock storm screen door latch set with 1 3 4 backset in antique brass 3 8 out of 5 stars 110 36 59 36.

This cross bore is where the latch is installed. Sometimes it s easier to measure from the edge of the door to the highest point on the bore hole. For operating clearance the hinge backset on the door is 1 16 less smaller than the hinge backset on the frame. Hinge backset is the dimension from the leading edge of the hinge to either the stop on the frame or to the stop face push side of the door.

Prime line e 2497 mortise keyed lock set with glass knob perfect for replacing antique lock sets and more fits doors with 2 3 8 backset 4 1 out of 5 stars 788 24 20 24. Through the edge of the door there is a 1 cross bore that extends from the edge of the door through the bore hole. A backset is the distance from the center of the cross bore to the edge of the door. The bore hole is the large diameter hole where the door knob is mounted.

The standard size is 6 feet 8 inches tall and 6 feet wide. When ordering a standard door set be sure to measure and specify the correct backset distance from the edge of the door to the center of the 2 frac18 bore. 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. The standard sized bore hole is 2 1 8 in diameter.

The most common backset is 2 3 8 but 2 3 4 is also quite common usually used on exterior doors. 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 method or measuring hinge backset varies between sdi and naamm hmma. If your doors are not pre drilled measure the stile width.

Patio doors are constructed of glass with a frame.