Butterfly Backdraft Damper

(63 customer reviews)

$26.48$169.38

  • Quality constructed from heavy-duty galvanized steel: 28-22 gauge, depending on size (see more details below) with lightweight aluminum damper blades.
  • Used as a backdraft damper for heat exchangers, exhaust systems, solar heating systems and other intake or exhaust applications where a powered damper is not needed, this product is not rated for use with a dryer.
  • Works in both horizontal or upward air flow positions and the foam seal provides minimal air leakage
  • Opens easily with normal air flow and closes with gravity, due to the specially designed angled aluminum damper blades
  • Available for duct sizes ranging from 4 inch to 20 inch
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SKU BD Categories ,

Description

The FAMCO BD butterfly backdraft damper is used as a backdraft damper for heat exchangers, exhaust systems, solar heating systems and other intake or exhaust applications where a powered damper is not needed, this product is not rated for use with a dryer. This damper works in both horizontal or vertical positions and the foam seal provides minimal air leakage. Due to its unique design and aluminum blades, it opens easily with normal air flow and closes with gravity. Quality constructed from heavy-duty galvanized steel, sizes 4-6 inch are 28 gauge, sizes 8-12 inch are 26 gauge, size 14 inch is 24 gauge, and sizes 16-20 inch are 22 gauge. The FAMCO BD butterfly backdraft damper comes in sizes ranging from 4 inch to 20 inch. The FAMCO BD butterfly backdraft damper is manufactured by FAMCO in the United States and comes with a 1-year warranty against product defects and workmanship. If you have any questions about this product, please refer to the FAQs above or feel free to contact us. Download the Product Specs .PDF

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Spec Sheet

Print Spec Sheet

Butterfly Backdraft Damper

SKU: BD

Questions and answers of the customers

    Will the 4" damper work if the whole unit is installed vertically? Or does the unit need to be installed horizontally in order to function properly?
  1. Q Will the 4" damper work if the whole unit is installed vertically? Or does the unit need to be in...... Read more answer now
    Asked on February 13, 2021 4:46 am
    A

    This unit is designed to be installed horizontally in order to function properly.

  2. Can this damper (7" diameter) be used in the exhaust from a kitchen range hood?
  3. Q Can this damper (7" diameter) be used in the exhaust from a kitchen range hood? answer now
    Asked on January 26, 2021 2:07 pm
    A

    Yes - this damper can be used with a kitchen range hood exhaust duct.

  4. Is a dryer strong enough to open the damper on the 4"?
  5. Q Is a dryer strong enough to open the damper on the 4"? answer now
    Asked on December 21, 2020 4:20 am
    A

    This product is not rated for use with a dryer, as the foam gasket may trap lint and pose a fire risk.

  6. Would this work with a on demand hot water heater with no forced exhaust .
  7. Q Would this work with a on demand hot water heater with no forced exhaust . answer now
    Asked on October 21, 2020 6:22 pm
    A

    Yes - this damper can be used with water heaters

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63 reviews for Butterfly Backdraft Damper

5.0
Based on 63 reviews
5 star
95%
4 star
4%
3 star
0%
2 star
0%
1 star
0%
Showing 3 of 63 reviews (4 star). See all 63 reviews
  1. Daniel S. (verified owner)

    Product works as designed.

  2. John H. (verified owner)

    I received the wrong size when it was first shipped to me. The packing slip said it was the size I ordered but what came in the box was the wrong size. I called and they sent the correct size by overnight freight.

  3. Tommy Taylor (verified owner)

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