air duct plug for sale, brand-new and used.

4-wire photoelectric low-flow duct smoke detector The InnovairFlex™ Series are the only duct smoke detectors flexible enough to fit configurations from square to rectangular and everything in between. The InnovairFlex D4120 4-wire photoelectric duct smoke detector features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork. This unit senses smoke in the most challenging conditions, operating in airflow speeds of 100 to 4,000 feet pe

Item listing is for Lot of 3 Air Products and Controls SL-2000-P Photoelectric Duct Smoke Detector Used, from big manufacturer, change layout of plant & engineering section. Appear good. Few left.

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Photoelectric, integrated low-flow technology. • Air velocity rating from 100 ft/min to 4,000 ft/min (0.5 m/s to 20.32 m/sec). • Versatile mounting options: square or rectangular configuration.