Leviton provides different types of unpopulated plastic mounting brackets to accommodate the installer's need for custom mounting solutions within Leviton's Series 140, 280 and 420 Structured Media Centers. Leviton's Single Plastic Bracket accepts mounting of any single Leviton phone, data, security, or DSL Filter Expansion Board within the Structured Media Center to enhance an existing system, or for use as a stand-alone solution for voice (with or without security), data and DSL filtering services. Single Plastic Bracket for mounting a single Leviton phone, data, security, or DSL Filter Expansion Board in a Leviton Series 140, 280 or 420 Structured Media Center.