Standard Interior Door Backset

Standard backsets are either a 2 3 8 backset or 2 3 4 backset.

Standard interior door backset.

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. 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 most common backset is 2 3 8 but 2 3 4 is also quite common usually used on exterior doors. The standard sized bore hole is 2 1 8 in diameter.

Sometimes it s easier to measure from the edge of the door to the highest point on the bore hole. The standard size is 6 feet 8 inches tall and 6 feet wide. Opening heights 3 0 through 4 11 15 16 centered in door height not frame. Most interior doors are prepped with a single boor hole.

However patio doors are routinely available in 6 foot 11 inch and 8 foot heights. The method or measuring hinge backset varies between sdi and naamm hmma. Patio doors are constructed of glass with a frame. 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.

Some door manufacturers carry stock doors in 7 foot and 8 foot heights and door widths from 24 inches to 42 inches. This cross bore is where the latch is installed. 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. Most modern doors have a 2 frac38 backset although exterior doors and some larger interior doors may have a 2 backset.

If your doors are not pre drilled measure the stile width. The bore hole is the large diameter hole where the door knob is mounted. 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. The two standard backset measurements in north america are 2 3 8 inches and 2 3 4 inches.

A backset is the distance from the center of the cross bore to the edge of the door.