Therwen Backdraft Damper Duct Manual Volume Damper with Sleeve Stove Pipe Galvanized Sheet Adjustment Airflow Ducting Branch HVAC Air Balancing for Range Hoods, Fans(6 Inch, 1 Pc) OddsShifter Part Number: 20x25x1 Air Filter

Part Number: 20x25x1 Air Filter

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Easy to Assemble: Follow the instructions

model number: HW600934

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Therwen Backdraft Damper Duct Manual Volume Damper with Sleeve Stove Pipe Galvanized Sheet Adjustment Airflow Ducting Branch HVAC Air Balancing for Range Hoods, Fans(6 Inch, 1 Pc) OddsShifter Part Number: 20x25x1 Air FilterBrand: Therwen Color: Silver Features: Suitable Size: the bend end interface of air duct damper measures about 5. 87 inches 14. 92 cm in diameter while the other side is about 6 inches 15. 24 cm in diameter and the height is about 6. 25 inches 15. 87 cm in height, which is suitable for inserting 6 inch ventilation duct Easy to Install: you simply slide the air ducting damper into the pipe and screw it in an easy to adjust position, then hide the seam