Duct Mount Kit Product Type Duct Mount Kit Sub-Brand Macurco Series Commercial Series For Use With Macurco Gas Detector Exterior Height 3.5 in Exterior Length 6.25 in Exterior Width 6.25 in Features Airtight Enclosure Clear Cover Allows View of Detector Displays and Status Lights Provides Detection and Monitoring of Gas Concentrations in Ventilation Ducts