A cable routing assembly for providing a portal for routing low voltage cables through a wall. The cable routing assembly includes a protective cable frame, a low voltage mounting bracket, and a cover plate. The low voltage mounting bracket includes two adjustable flags for attachment to a wall. The protective cable frame includes two arms with apertures therein to enable mounting directly to the low voltage mounting bracket. Bores in the arms of the protective cable frame enable receipt of fasteners for mounting the cover plate thereto. An opening in the protective cable frame is capable of receiving low voltage cables for routing through the wall and into an adjacent room. The surface of the cable frame opening includes a rounded surface to provide a gentle bend radius to any cables routed through the cable frame.