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The Air Products and Controls STN-10.0 is a 10' Sampling Tube for Ducts 5' - 10' Wide (SM-501 series). These metal sampling tubes are designed for use with SL- and RT- Series detectors. Sampling tubes install into HVAC ducts as part of a fire detection and alarm system to capture air samples and test for smoke presence.
Sampling tubes are inserted into ductwork with strategically placed holes to sample air for duct smoke detectors.
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