Bosch LC5-CBB Back box for LC5-WC06E4 ceiling speaker
$14.30
The TOA CP97 grille can easily be attached to the CM-960 speaker.
TOA PC2852 15W 8″ Two-Way Speaker with Metal Grille, PURE WHITE, 45Hz-20kHz, 96dB.
5″ Ceiling Speaker, dual cone 5″ woofer, 3W, 6W taps at 100V line.