The PAC-251 allows customers to integrate a CPU, DVD Player or VCR into installations using most Chief Large Flat Panel Display mounts. Easily adapts to Chief's patented Q-Latch Mounting Pattern and securely hides the device behind the Large Flat Panel Display. This accessory allows easy access to drives and input/output connections. The PAC-251 adds 3.975" to installation depth and 14 lbs. (not including CPU/DVD/VCR) to installation. Be sure added weight of PAC-251 and CPU/DVD/VCR does not exceed Large Flat Panel Display mount weight capacity.