Bose Professional Bose EdgeMax Ceiling Tile 24 x 24 in

EdgeMax Ceiling Tile 24 x 24 in: Pre-cut replacement tile that drops an EM90 or EM180 in without cutting the existing tile. Compatible with EdgeMax EM90 and EM180 in-ceiling loudspeakers.

Bose specifies it for hung-tile ceilings. It ships under part number 843297-0210 (24 x 24 inch model).