ABS Back Box for LC4 Series loudspeakers The Bosch LC4-CBB is an optional back-box for the LC4-UC06E, LC4-UC12E and LC4-UC24E ceiling speakers. When used with this back box, these loudspeakers are then compliant with EN54-24 voice alarm standards. The LC4-CBB protects the rear of the loudspeaker from dust and other falling debris, makes it vermin proof and prevents sound traveling via the ceiling cavity to adjacent areas. The back-box has a snap fit fitting to the loudspeaker and has knock-out holes for two grommets (11.5 mm) and for two cable glands (20.5 mm) on the top.

ABS Back Box for LC4 Series loudspeakers The Bosch LC4-CBB is an optional back-box for the LC4-UC06E, LC4-UC12E and LC4-UC24E ceiling speakers. When used with this back box, these loudspeakers are then compliant with EN54-24 voice alarm standards. The LC4-CBB protects the rear of the loudspeaker from dust and other falling debris, makes it vermin proof and prevents sound traveling via the ceiling cavity to adjacent areas. The back-box has a snap fit fitting to the loudspeaker and has knock-out holes for two grommets (11.5 mm) and for two cable glands (20.5 mm) on the top.

LC4CBB$11.09