Bose EMCT EdgeMax 24" x 24" Ceiling Tile SpeakerThe EdgeMax Tile accessory is a ceiling tile replacement for use with the EdgeMax EM90 and EM180 loudspeakers, eliminating the need to cut existing ceiling tiles. Simply remove the existing ceiling tile, and use the EdgeMax Tile accessory in its place along with the adjustable tile bridge supplied with the loudspeaker. The EdgeMax Tile is sized perfectly to accept the EM90 or EM180 loudspeaker, saving time and ensuring excellent aesthetics. There are