The IB-4100 is a blank wall box that mounts into a 4-gang deep masonry back box. Shallower back boxes can be used depending on the depth of the controls and electronics that must be mounted behind the IB-4100. Behind the front door of the IB-4100 it is .75” deep, and behind the ID-4100 it is 1.096” deep. The IB-4100 comes with either a camlock (Standard) or you can request a thumb latch (optional).
