Specifically designed for our existing line of advanced 6" in-ceiling loudspeakers, these Fire-Rated Back Boxes offer new levels of performance, reliability and convenience in a variety of commercial and residential loudspeaker applications.The FRB models meet the following agency requirements:
- UL 2043
- ATSM E119
- NFPA251
- ULC CAN/UNLC S101/M89
- UBC 7-1
- Fits all Boston 8" in-ceiling speakers
- Standard 3/8? knockouts for the two supplied ULM connectors
- Color coded raised flange around the speaker opening to aid location after drywall installation ? blue for 6? speakers
- Can be mounted in 12?, 16? or 24? stud bays
- Adjustable support bars are supplied that allow easy installation in drop tile ceilings
- An integrated safety tab is mounted on the back of the cabinet for an installer-supplied safety cable
- internal mountings for 70V/100V transformers