Leviton® provides different types of unpopulated plastic mounting brackets to accommodate the installer's need for custom mounting solutions within Leviton® series 140, 280 and 420 Structured Media® centers. Leviton® 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.