Manage your power and signal cables behind your flat screen TV using this Expandable Media Box with Duplex Receptacle from Monoprice™!This commercial grade media box features a NEMA® 5‑15 duplex power outlet, which is rated for 15 amps and 125 VAC. The box has an opening opposite the power outlet, which can be used for multiple cable pass‑through or for a keystone installation. The kit includes a Flexible Opening plate for cable pass‑through, a 6‑port Keystone plate, and a Blank plate in case you don't want to use that section. It also features openings in the top and bottom for running low‑voltage signal cables. It includes metal mounting wings, so you can attach it directly to drywall without requiring the use of a separate low‑voltage mounting bracket.Features: Low profile design fits behind the industry's thinnest mounts and TVsConceal multiple AV cables and accessories behind your HDTV or other display deviceWall box storage capacity increases by 75% when the expandable portion is extended into the wallIncludes openings in the top and in the bottomThree (3) interchangeable plates are included to cover these openings, allowing for multiple configuration optionsThree (3) plates included: Flexible Opening Plate, 6‑Port Keystone Plate, and Blank Plate15 Amp/125 Volt Tamper‑resistant Duplex ReceptacleOutlet box includedMetal mounting wings are attached to the media plate and fasten tightly against the back of the drywallQuick and easy to installNote that for safety purposes, you must use cable rated for in‑wall, riser, or plenum use when running cables inside your wall. Failure to do so could result in a fire hazard and invalidate any fire insurance claims. Support Files: Quick Installation Guide (Jul 14, 2014)Sales Sheet (Jul 14, 2014)Monoprice™ and all Monoprice logos are trademarks of Monoprice Inc. NEMA® is a registered trademark of National Electrical Manufacturers Association. Updated Jan 26, 2022 Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov .