Fire-Lite SB-I/O Surface Back Box for BG Pull Stations

The Fire-Lite SB-I/O is a UL-listed indoor/outdoor surface-mount backbox designed for compatible Fire-Lite BG-12 Series manual fire alarm pull stations. Constructed from UV-stabilized, flame-retardant polycarbonate, the red enclosure features self-sealing mounting bosses, snap latches, and two reinforced 1/2-inch NPT conduit connections. Measuring approximately 5.60 inches high, 4.22 inches wide, and 1.44 inches deep, it provides a durable mounting solution for fire alarm pull stations where recessed installation is impractical.

Fire-Lite SB-I/O Indoor/Outdoor Surface-Mount Backbox for BG-12 Pull Stations

The Fire-Lite SB-I/O surface-mount backbox provides a protective mounting enclosure for compatible Fire-Lite BG-12 Series manual fire alarm pull stations, including the BG-12LX addressable pull station. Designed for indoor and outdoor fire alarm installations, the backbox allows manual initiating devices to be mounted directly to a wall or compatible electrical box without requiring a recessed installation. Its red housing complements Fire-Lite pull stations and supports installation in commercial buildings, schools, warehouses, industrial facilities, and exterior building entrances. The SB-I/O replaces the earlier SB-10 metal surface-mount backbox in approved applications, providing a nonmetallic alternative with improved resistance to outdoor environmental exposure.

The SB-I/O is manufactured from UV-stabilized polycarbonate with a UL 94 V-0 flame-retardant material classification. Its enclosure measures approximately 5.601 inches high, 4.222 inches wide, and 1.439 inches deep, providing space for compatible pull station mounting and wiring connections. The housing incorporates molded self-sealing mounting bosses and thin-wall material covering the mounting openings and bottom conduit entry to improve weather resistance. Two reinforced 1/2-inch NPT conduit connector outlets support wiring entry, with one outlet plug included. The enclosure is UL listed for indoor and outdoor applications and is identified as CSFM listed in manufacturer documentation. These construction features support installations requiring a surface-mounted fire alarm initiating device enclosure.

Installation of the Fire-Lite SB-I/O pull station backbox uses the integrated mounting holes and molded snap latches to secure compatible manual pull stations. The enclosure includes single-gang electrical box mounting knockouts, allowing attachment to an existing electrical box or an appropriate wall surface. Four #10 x 1-inch mounting screws are supplied with the backbox, along with a conduit outlet plug. The snap-latch design simplifies attachment of the pull station to the enclosure while maintaining access for installation and service. For outdoor applications, installers must follow the manufacturer's instructions for conduit connections, mounting openings, and environmental sealing to preserve the required weather resistance. The backbox contains no electrical circuitry and does not require a separate power connection.

The Fire-Lite SB-I/O indoor/outdoor mounting box supports fire alarm pull station installations where surface-mounted conduit, exposed wall construction, or existing electrical infrastructure prevents flush mounting. It is compatible with designated Fire-Lite BG-12 Series pull stations and is also documented for use with Silent Knight PS-SA and PS-DA manual pull stations. The SB-I/O is supplied with certain outdoor pull station configurations, including the Fire-Lite BG-12LOB, and can be purchased separately for compatible installations. The BG-12LRA agent release station requires a different backbox, making model compatibility verification important before installation. As a mechanical mounting accessory, the SB-I/O provides enclosure support and wiring access but does not independently detect fire conditions or transmit alarm signals. The selected pull station and complete installation must comply with applicable fire alarm codes and manufacturer requirements.