Leviton Voice, Data and TV Panels allow telephone, data and video to be routed throughout the home from 1-simple panel. Leviton's 3-Telephone and Data Expansion Board offerings are designed for use in Leviton's Structured Media Enclosures, including the Multi Dwelling Unit (MDU) Enclosure and the Series 140,280 and 420 Structured Media Centers (SMCs) to support a variety of telephone distribution configurations. They quick snap into molded-in brackets in Leviton's MDU Enclosure or can be attached to Leviton's Pre-Configured Structured Cabling Panels, Single Plastic Brackets or Expansion Plastic Brackets for mounting in Series 140,280 and 420 Structured Media Centers.