During a fire, the ceiling cavity can allow fire or smoke to spread throughout a building. To inhibit fire entering the cavity via the ceiling loudspeaker, it can be fitted with an LBC 3080/x1 steel fire dome. This is mounted on the loudspeaker assembly using four self- tapping screws supplied with the fire dome. The fire- dome has knockout holes for two grommets (supplied) and two cable glands (PG 13). The LBC 3080/x1 Fire dome is available in two color versions: the LBC 3080/01 is flame red (RAL 3000) and the LBC 3080/11 is white (RAL 9010). This fire dome can only be used with the ceiling speakers: LBC 3087/41, LBC 3090/01, LBC 3090/31, LHM 0606/00 and LHM 0606/10.