The over ride lock is installed and includes a user key. This is reversible for right or left hand and backset is 2 3/4. A lock with the key over ride is a must when there in only one entrance/exit. The item "Kaba 5000 5021 Pushbutton Lock Over Ride Lock Installed withkeys" is in sale since Saturday, December 8, 2018.This item is in the category "Business & Industrial\Building Materials & Supplies\Doors & Fixtures\Locks & Locksets". The seller is "bake98" and is located in Oxford, Pennsylvania. This item can be shipped to United States.