In-wall mountable housings include a back, top, bottom and laterally opposing first and second sidewalls that form an interior compartment. The sidewalls, top and bottom terminate at a front of the housing. The housing also includes first and second tabs attached to each of the first and second sidewalls. The first and the second tabs have one side that is integrally attached to the first or second sidewalls and three sides that are detached or detachable therefrom so that the first and second tabs can pivot outward to be perpendicular to the sidewalls. When not used, the tabs are flush with the sidewalls or angle inward into the housing. The first tab pivots outward to be spaced apart a first defined distance from the front of the housing and the second tab pivots outward to be spaced apart a second defined distance from the front of the housing.