[Design]Features a spring loaded mechanism that ensures reliable automatic closure to block .; [Duct Connector]Designed as a duct single way valve to effectively prevent backflow of air and smoke in ventilation systems.; - Includes unit per package, ready for immediate use in exhaust fans or smoke extraction systems.; [Easy Installation]: Compact size fits standard ventilation ducts, making installation quick and easy.; [Material]: Crafted from galvanized sheet, this Vent Adapter features a smooth, ensures long time performance
What's in the box
1 x Duct Connector
