| Size | 77 mm, 99 mm, 112 mm, 132 mm |
|---|---|
| Material | Plastic |
| Connector Type | Adapter |
| Thread Type | NPT |
| Number of Pieces | 1 |
| Part Number | 1963960-qiwgt |
| Item Weight | 8 ounces |
| Package Dimensions | 5.5 x 5.5 x 5.4 inches |
| Style | Modern |
| Special Features | Flame Resistant |
| Batteries Included | No |
| Batteries Required | No |
| Date First Available | July 1, 2024 |
| Customer Reviews | 3.8 out of 5 stars |
| Item Length | 5.5 |
| Item Height | 5.4 |
| Item Width | 5.5 |
Check the listing for details. 3'' 4'' Backdraft Damper Duct Draft Stopper Draft Blocker, One Way Airflow. Condition: New. Listed at 27.10 USD. The backdraft damper is installed by pushing it into the vent pipe as far as it will go. If the backdraft damper is installed horizontally, the spring position should be horizontal for optimum opening and closing.
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