The TSW-770/1070-MUMK permits a TSW-770, TSW-1070, TSS-770, or TSS-1070 series touch screen touch screen to be attached to the mullion of an interior glass wall, window, or partition. The TSW-770/1070-MUMK mounts a compatible touch screen to the left or right of any hollow, metallic vertical mullion. Two mounting brackets are provided that allow the TSW-770/1070-MUMK to be installed in one of two configurations (side mount or front mount). Wiring is run to the touch screen from inside the mullion to create a clean, finished appearance.