• Back‑box protects the rear of the loudspeaker from dust, falling objects, makes the unit vermin proof
• Back‑box is assembled with the loudspeaker by means of a snap‑in construction and has knock‑out holes for two grommets (11.5 mm) and for two cable glands (20.5 mm) aside and on the top
The LC4-CBB from Bosch is an back‑box protects the rear of the loudspeaker from dust, falling objects, makes the unit vermin proof and prevents sound traveling via the ceiling cavity to adjacent areas. The back‑box is assembled with the loudspeaker by means of a snap‑in construction and has knock‑out holes for two grommets (11.5 mm) and for two cable glands (20.5 mm) aside and on the top.