Model # AC-BD 04

Internet #202907123

Store SO SKU #1000678789

Speedi-Products 4 in. Galvanized Back Draft Prevention Damper
0816040015047

Speedi-Products

4 in. Galvanized Back Draft Prevention Damper

$26.20 /each

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Product Overview

Speedi-Products 4 in. Galvanized Sheet Metal Round Back Draft Damper. Ideal for use with intake or exhaust duct systems. Can be used for Remodeling, Do it yourself and New Residential projects.

  • Ideal for use with intake or exhaust duct systems
  • Seal joints with approved duct mastic sealants
  • Insulate ductwork for improved energy efficiency and comfort
  • Consult your local building codes for approved installation practices

Info & Guides

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Specifications

Dimensions

Details

Warranty / Certifications

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Customer Questions & Answers

is there a 3" damper also ?

Asked by: Chris
You could use a 4" to 3" Fernco reducer
Answered by: Jess
Date published: 2016-10-17

will this damper work in a horizontal mounting?

Asked by: kaiser
No
Answered by: EOS
Date published: 2016-12-13

Can the axis of this tube be mounted vertical rather than horizontal as depicted here?

Asked by: Ken
I am pretty sure that is the preferred method since the flaps would rely on gravity to keep it closed.
Answered by: Arkay
Date published: 2017-02-16
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Customer Reviews

4 in. Galvanized Back Draft Prevention Damper is rated 4.8 out of 5 by 6.
Rated 5 out of 5 by from Accomplished what I needed. We live in a condo and our electric clothes dryer shares a common ex... Accomplished what I needed. We live in a condo and our electric clothes dryer shares a common exhaust outside vent. We were getting moist dryer exhaust backdraft from other users. When installed vertically (it works on gravity), this stopped the problem. It is quality made.
Date published: 2016-12-13
Rated 5 out of 5 by from This is well built. Would do the job I wanted it to do, but I scraped the prodject. Home depot ac... This is well built. Would do the job I wanted it to do, but I scraped the prodject. Home depot accepted my returns. No problem . Thank you-----------------Ted
Date published: 2017-02-07
Rated 4 out of 5 by from Damper works as described to prevent back drafts I used this in the exterior exhaust vent I added to my microwave oven, which ventilates the top of the stove. It works well in my vertical vent configuration, where the fan pushes the air straight up, and the damper closes due to gravity when the fan is not running, which stops cold air from coming in. It has a foam-like seat, which stops almost all reverse air flow. The damper is split into 2 half-circles, which pivot around a center support to open or close.
Date published: 2012-01-04
Rated 5 out of 5 by from Works As Intended Purchased a few of these for some older 50k btu unit heaters. Pilots kept blowing out and this was much more cost effective than switching them all to electronic ignition.
Date published: 2014-12-30
Rated 5 out of 5 by from Very simple but effective product. I installed this product on the dryer and it works perfectly. No electric motors or contraptions to fiddle with. Just put it inline with your hose and DONE!
Date published: 2015-03-25
Rated 5 out of 5 by from Simple, but effective. Well constructed and seems durable Works like a champ! I was a little worried that it could stick shut, but the way it's constructed it is very smooth and non-binding. I think after a year or so I'll re-check it, but so far so good!
Date published: 2015-12-15
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