How do I know if I need a tubular or mortise lockset?

When you remove your existing door handle, you will see that the installation holes have a shape. If the hole is round, you need a tubular lockset. If it is square, you need a mortise lockset.

What does backset mean and how do I know how large the backset should be?

Backset is the measure of distance from the edge of the door to the center of the opening that holds the door knob. To determine this number, add the radius of the hole and add it to the distance from the edge of the hole to the edge of the door.

How do I know if I need a tubular or mortise lockset?

When you remove your existing door handle, you will see that the installation holes have a shape. If the hole is round, you need a tubular lockset. If it is square, you need a mortise lockset.

Standard doors will have a backset of either 2-3/8 inches or 2-3/4 inches. Use the filter tool to view only knobs with the correct backset.

What does “center to center” mean?

“Center to center” is also sometimes referred to as “hole to hole”. This is a measurement used for door pulls and measures the distance between the two attachment points or screw holes.

What is a “dummy” knob?

Dummy hardware is sometimes seen in both outdoor and indoor applications. They are knobs, levers, and handles that are totally non-functional. They are not connected to any latch or locking mechanism. They serve mostly as matching trim in a double door setup (such as with French doors).

What is a passage knob?

A passage knob or lever does not have a locking function.

What is a privacy knob?

A privacy knob or lever latch-sets can be locked, often with a simple button lock or push-and-turn lock. Used where a light-duty lock is needed, such as on bedroom or bathroom doors.