In-wall Metal Box Medium w/1 knock out for A/V Accessories In-Wall Medium Box w/ 1 Knock-out for A/V Accessories • Low-profile design fits behind the thinnest mounts and flat panel displays • Component cables routed inside the wall • Sleek design makes outside cable covers unnecessary • Heavy gage cold rolled steel construction • Cable ties and grommet included for an organized finish • Installs between 16" (406mm) wood stud centers when positioned vertically • Can be mounted horizontally or vertically for better positioning