The SANUS ELM803 in-wall low voltage box helps to position a flat-panel TV as flush with the wall as possible, offering 56 cubic inches of space to hold cables and create a clean cavity in the wall. Great for use behind mounts with or without ClickFit compatibility, the ELM803 features cable routing holes and single-gang low voltage pass-through inlet/outlet knockouts for the ultimate in convenience. Simply fit the in-wall box into an opening behind any wall-mounted TV to route cables and wires into the wall for a seamless appearance