20 in. Downdraft Evaporative Cooler Barometric Damper - 19.75 x 19.75 in.

(5 reviews) Write a Review
SKU:
DD1975
Weight:
5.00 LBS
$99.00

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Description

Automatic barometric damper for compatible downdraft evaporative cooler duct installations.

Specifications & Compatibility

  • Nominal cooler duct size: 20 x 20 inches
  • Actual listed damper size: 19.75 x 19.75 inches
  • Airflow configuration: downdraft
  • Frame and vanes: high-grade aluminum
  • Hinges: nylon
  • Weatherstripping insulation helps form a thermal seal
  • Operation: opens automatically during cooler airflow and closes when the cooler is off

Installation & Use

For compatible 20-inch evaporative cooler roof jacks. Measure the available opening and confirm the required airflow direction and mounting orientation before ordering. Use the downdraft version for the matching installation.

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5 Reviews

  • 5

    Best product and service!

    Posted by Michael Mckinney on Aug 29th 2026

    Very pleased with the downdraft barometric damper and the FAST shipping! You guys are awesome! I actually had an issue with trying to place the order online. I called and the gentleman I spoke to knew exactly what the issue was and he was super friendly. If your shipping address is different than the mailing address of your credit card, make sure that is correct in the online form! My bad! LOL

  • 5

    down draft damper

    Posted by neil on Oct 17th 2024

    I didn't know these exist,,,they are just what I was looking for. I'm ordering three more

  • 5

    Works great!

    Posted by Desert Sheetmetal on Jul 22nd 2024

    Damper is good quality and performs as it should.

  • 5

    20" DOWNDRAFT BAROMETRIC DAMPER

    Posted by Eric on Jul 10th 2023

    Fast shipper & good parts

  • 5

    Works Great

    Posted by Taylor on May 26th 2019

    Well made of aluminum. Slid snugly into my roof jack. Simple to install.

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