For Door Stiles 4" or Wider.
9100 Backset Extension Kit
+ Ideal for applications requiring the handle (typically knob) to be located at a specific distance while keeping the thumb turn and/or cylinder closer to the edge of the door (2 1/2" or 2 3/4" backset standard).
+ Limited functions available. Please call for assistance.
+ Specify 9100 Function, Backset for T-Turn/Cylinder, Backset for Handle (e.g. 9124EXT.212.18).