The Universal Chicago Plenum speakers enable the masking to be distributed uniformly throughout the space. Typically hung above the ceiling tiles, the speakers fill the plenum with sound that gently filters into the environment below to create speech privacy. Speakers used in the Gold system are configured with integrated RJ45 connections for plug and play and ease of installation. Speakers distribute sound masking and/or music. This speaker enclosure has a junction box to house cables. Specify this unit for the city of Chicago or where this type of junction box enclosure is required by code.