Napco FWC-DTUBE-S3 Sampling Tube Duct Detector 1-3

Optimize duct smoke surveillance with the Napco Security Technologies FWC-DTUBE-S3 sampling tube, engineered to deliver consistent, reliable air sampling for duct & beam smoke detectors. Designed for commercial security and HVAC monitoring, this steel intake sampling tube features a series of holes drilled along its length that must face the airflow and should extend the full width of the duct to ensure representative sampling. Order to a custom length or choose from standard 1-3" sections to match your duct dimensions; an exhaust tube of approximately 7.5" is included to maintain proper airflow and detector response. The FWC-DTUBE-S3 (manufacturer part number FWC-DTUBE-S3) simplifies installation, integrates seamlessly with Napco detectors, and supports early alarm accuracy—reducing false alarms and protecting critical spaces like data centers, server rooms, and commercial HVAC systems. Made in the US, this robust accessory helps facilities meet smoke detection and safety requirements while enhancing overall security monitoring. Specify the FWC-DTUBE-S3 for your next duct smoke detection project or contact our sales team to order and ensure proper HVAC smoke sampling.

• Provides reliable early smoke sampling directly in HVAC ducts to improve building protection and reduce risk of undetected fires
• Customizable length or available in standard 1-3" sections for a precise fit across duct widths
• Durable steel intake tube with longitudinal sampling holes designed to face the airflow for accurate air monitoring
• Includes a compact exhaust tube (~7.5") for proper airflow balance and detector performance
• Simple installation and compatibility with Napco duct & beam smoke detectors for fast integration into security and monitoring systems