Bose Professional Bose FreeSpace FS4SE Aluminum Grille (1 Pair)

FreeSpace FS4SE Aluminum Grille (1 Pair): Aluminum replacement grille pair for FS4SE surface-mount loudspeakers. Compatible with FreeSpace FS4SE surface-mount loudspeakers.

Bose specifies it for indoor or outdoor. It ships under part numbers 841159-0110 (Black), 841159-0210 (White).