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Helios MV 125 Mixed Flow Duct Fan Hangable-duct fan Multi VENT with high pressure and volume performance for space-saving installation in ducts of GERMAN quality !!! Standard duct diameters corresponding to the Connectors are made of impact and corrosion resistant plastic, color light gray, as well as integrated mounting support for easy installati..

System Sensor WFD40 Water Flow Detector System Sensor WFD40 Water Flow Detector, 4" Pipe Size System Sensor WFD40 Waterflow Detector Also known as BK-WFD40 The System Sensor WFD40 is a water flow detector for use with 4" pipe. The System Sensor WFD series is compatible with schedule 10 to 40, 2" to 8" steel pipes and can be mounted in a vertical or..