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zippered filter bag to prevent pump clogging
4 dBA | Bearings: Dual Ball
• Vermicrop recommends using 60/40 with watering systems with drain
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Backdraft Damper 4 - Ducting Insert 4" Black Galvanized Steel harvest-solutions zippered filter bag to preventAn antidraft duct insert designed for use with range hoods, bathroom fans and other home HVAC applications. Features outer rubber gaskets that create an airtight seal and grip between the damper and ducts. Mounts horizontally or vertically to prevent backflow and debris from entering ducting. Galvanized steel body with spring loaded aluminum damper blades that open with minimal airflow. Fit for 4 in. Duct Openings Product Length: 5. 03 inches Finish:
