Spring Loaded Backdraft Dampers
Backdraft dampers. Constructed from galvanized steel for the collar and lightweight aluminum for the damper blades. Spring loaded for positive closure.
Can be mounted horizontally or vertically -- horizontal or vertical (up) airflow. The collars are undercut 1/8" to fit duct (12" size is 1/4" undercut).
|Do you have questions about the products on this page?
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|#1||Q: Is there a noticeable reduction in air flow, specifically if I use two?
A: You can expect a slight increase in static pressure, but it is almost negligible when using a high statich centrifugal fan.
Asked on 2014-03-14 by Jeff S
|#2||Q: What is the temperature rating for this product?
A: The top rating for this is 140 degrees F.
Asked on 2014-01-03 by Mike
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