A Unison DRd can be partially recessed into a wall using a Unison DRd Semi-Recessed Installation Kit. This allows a DRd6 or DRd12 to be recessed 4" to fit in a 2x4 or 2x6 stud wall. This kit cannot be used with DRd12AX12 setups, or single DRd12 or DRd6 with AX racks.
The DRd12 kit part number is 7183K1002, and the DRd6 kit part number is 7183K1003.