Traditional 16 Inch Iron Art Mortise Handleset With Knob, Acorn IUBBD / IUBBI

Passage – Always unlatches from both sides. No locking. For hallways and closets.

Privacy – Locks from inside with push-button or thumbturn. No key. For bathrooms and bedrooms.

Entry / Keyed – Key from outside, thumbturn from inside. For exterior and security doors.

Keyed Both Sides – Key required on both sides. For doors with glass near the lock.

Dummy – Non-functional pull, no latch or lock. For inactive panels and decorative use.

Storeroom – Always locked outside (key required), always free inside. For commercial storage.

Classroom – Outside locked or unlocked by key only; inside always free. For school and office doors.

Measure from the edge of door to the center of the bore hole or the lock body that you are replacing. Most backsets are either 2-3/8" or 2-3/4". 

If you would like to be able to use the same key for two (2) or more keyed locks you order, click the "Keyed Alike" on every lock you order. To have all you're locks with a different key for each set, click "Keyed different". For passage, privacy and dummy sets click "Non-keyed".
Also see: To learn more about our Lock Keying Services including Master keying, Grandmaster keying and Construction keying as well as keyed alike locks.