Gentex GBBB, Outdoor Surface Back-Box for GB Series

Keep your GB Series fire bells protected and fully operational outdoors with the Gentex GBBB outdoor surface back-box. Designed by GENTEX for life-safety applications, this metal back-box provides weatherproof housing that preserves the high-decibel output and reliable performance of GB6 and GB10 bells in exterior mounting locations. The GBBB mounts to a standard 4-inch square electrical box and includes 18 AWG wire leads for fast, contractor-friendly installation. Built to UL464 requirements and finished in high-visibility red, it helps satisfy code needs and simplifies system inspections for fire, security and facility teams. Ideal for fire alarm, security and monitoring installations where durable, low-voltage notification appliances must withstand the elements, the GBBB delivers a cost-effective solution that maintains alarm integrity and reduces service calls. Add the Gentex GBBB back-box to your next project to ensure outdoor coverage and dependable notification — order now or contact your supplier for system compatibility and installation guidance.

• Weatherproof outdoor protection that preserves GB Series bell performance in harsh environments
• Ensures reliable high-decibel notification and code compliance with UL464-rated metal construction
• Quick, low-cost installation — mounts to a standard 4-inch square electrical box and uses 18 AWG wire leads
• Compatible with Gentex GB6 (6-inch) and GB10 (10-inch) housings and 24VDC or 120VAC GB bells
• Visible red finish for easy identification in fire and security installations and streamlined integration with monitoring systems
• Backed by a 3-year limited warranty for long-term, trouble-free operation