What is a door backset measurement? A very common question as you cruise our Door Knobs & Levers and it’s easy to figure out!

Standard door preparation includes a 2 1/8″ diameter bore hole drilled through the door. Grab a tape measure and pull it from the edge of the door to the center of the bore hole. It will be 2 3/8″ or 2 3/4″. That’s your backset.