Bosch LC4-CBB Back Box for LC4 Ceiling Loudspeakers

The LC4-CBB is the sealed back box for Bosch LC4 ceiling loudspeakers. It closes the rear of the driver against dust and dripping water and makes the unit vermin proof.

Sealing the back also stops sound travelling through the ceiling void into adjacent rooms, so a paging or background music zone stays where it was drawn. The moulded box is black, EN 54-24 certified, weighs 160 g, and works from -25 to 55 °C.