Choose these knobs if you need knobs that each open with a different key. Once the outside knob is locked with the button on the inside knob, turn the inside knob to release the lock or unlock it with a key from the outside. These are also known as entrance knobs. They are UL Listed for three-hour fire doors.

Select a knob with the correct backset distance (the distance from the door’s edge to the center of the knob's mounting hole) for your door. Latch bolt projection is the length the latch bolt extends from the door's edge.