Inline Butterfly Backdraft Damper with Spring - Galvanized
$28.50 – $60.79
Category: HVAC Damper – Subcategory: Backdraft Material: Galvanized Steel – Finish: Mill – Thickness: 28 Gauge Shape: Round – Dimensions: 4″, 5”, 6″, 7″, 8″, 10″ (undersized to fit in ductwork) – Sku: BDS
Questions and answers of the customers
Is this suitable for a dryer vent
Q Is this suitable for a dryer vent answer nowAsked on January 17, 2021 12:34 pmA
No - this is not rated or recommended for use with a dryer vent. the foam gasket may pose a risk of trapping lint.
At what pressure does the damper open with the installed spring?
Q At what pressure does the damper open with the installed spring?Asked on January 5, 2021 8:49 amThere are no answers for this question yet. Answer now
Will this reduce the airflow for a 1200 cfm BBQ hood vent if it was placed above the fans to block cold air coming down 10" stack when fan is not running?
- an the damper be reversed or come reversed from the factory ?
Q an the damper be reversed or come reversed from the factory ? answer nowAsked on December 18, 2020 2:23 pmA
No - we are unable to customize this product at this time, unfortunately.
Will this block cigar odor?
Q Will this block cigar odor? answer nowAsked on December 12, 2020 1:46 pmA
This is not what this is designed for, so we could not say - it is not 100% air tight, however, so this is unlikely.
How many CFM is the 4 inch damper rated for? Is it appropriate for a modern Broan exterior exaust range hood?
- Installation instructions? Does this need to be screwed to the outer duct to hold it in place, or can it simply be inserted in-line?