Fire Alarm - EN54 - Automatic Fire Detectors
FAA‑500‑SB-H Surface Mount Back Box with Damp Room Seal
This is used as an alternative to the Ceiling Mount Back Box. The
Surface Mount Back Boxes are designed for flush-mounted cable feed and
surface-mounted cable feed with cable protection conduits. The
FAA‑500‑SB‑H has an additional seal for damp rooms.