21" Net.Media Center provides more room to serve as the central distribution point for voice, data, video, audio, and security services. The 14.25" W x 21" H x 3.65" D center features up to 12 mounting spaces, designed for medium installations: 1 AC knockout for power, 3 top, 2 bottom, 2 per side, and 4 back 2" diameter cable access knockouts, and 16 cable tie anchor points. Great for medium installations in multi-family homes with small home offices (ROHS)