Model # AC-BD 06

Internet #202907125

Store SO SKU #1000677549

Speedi-Products 6 in. Galvanized Back Draft Prevention Damper
0816040015061

Speedi-Products

6 in. Galvanized Back Draft Prevention Damper

$23.93 /each

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Product Overview

Speedi-Products 6 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

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Customer Questions & Answers

7 Questions4 Answers

Customer Questions & Answers

6 in. Galvanized Back Draft Prevention Damper
6 in. Galvanized Back Draft Prevention Damper

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1 answer

Can i use it to attach to bathroom roof vent cap

This question is from 6 in. Galvanized Back Draft Prevention Damper
Asked by
jonesboro,ga
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September 24, 2016
my bathoom exhaust goes up to the roof vent cap however the butterfly damper thats just inside the fan motor doesn't really move that well. i was thinking if removing the damping from inside the bathroom and install this below the roof vent cap.
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Answer (1)

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October 29, 2016
Answer: 
you need to have only 1 damper, either at the bathroom fan, or at the roof cap.
imo its best to have a damper at the opening of the duct work ( roof cap ), so cold air/hot air from outside doesent penetrate as much in the duct work.
i am not a qualified person, check your building code.
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1 answer

Can this be used for AC/Heat ducting?

This question is from 6 in. Galvanized Back Draft Prevention Damper
Asked by
St. Stephen
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April 29, 2016
I have a trunk line that has air comming to all vent except 1 and there is no air flow. Is this what this product is for?
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Answer (1)

April 30, 2016
Answer: 
This product is for use with intake or exhaust duct systems.
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1 answer

Is this suitable for use in a vertical clothes dryer vent?

This question is from 6 in. Galvanized Back Draft Prevention Damper
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December 8, 2015
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Example: Atlanta, Georgia
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December 10, 2015
Answer: 
No, you want to us standard duct pipe with no damper, the damper would easily collect lint and be a fire hazard
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1 answer

Can this damper be used in a horizontal aplication for venting a range hood.

This question is from 6 in. Galvanized Back Draft Prevention Damper
Asked by
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October 6, 2015
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Asked by
Seattle
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Home Improvement Profile: Professional
October 29, 2015
Answer: 
No, it is a gravity operated butterfly vent, so a horizontal position would cause the vent to remain open.
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Customer Reviews

6 in. Galvanized Back Draft Prevention Damper is rated 4.6 out of 5 by 12.
Rated 4 out of 5 by from Was way too big (length-wise) to fit above the microwave so I had to cut it quite a bit to make i... Was way too big (length-wise) to fit above the microwave so I had to cut it quite a bit to make it fit. But it works perfectly.
Date published: 2016-10-25
Rated 5 out of 5 by from Excellent product. Excellent product.
Date published: 2016-11-16
Rated 5 out of 5 by from Vent Damper Does What It Is Supposed To This galvanized sheet metal fabrication for a vent damper to prevent cold air from leaking back into vents such as bathroom forced air vents is a good design (I'm an engineer) that uses gravity rather than springs to reclose the damper wings. So, proper orientation with gravity in a vertical position is critical to a proper install. The damper half-rounds are held to the center cross-strut with fabric strips that appear to be synthetic material and the longevity of those fabric strips may be in question, but if they hold up, the only other longevity issue is the foam strip used for the seal ring that also serves to quiet the closing of the half-round damper wings. I purchased this size (6" OD) to match a fan that would fit into an existing recessed light hole cut into the horizontal sheetrock in a bathroom. I use a reducer on the top of this damper to neck down from 6" to 3" to increase velocity and save on vent piping costs. But, I have a limited vertical space to work in between the top of the fan cage and some 2x4 bracing over the drop down I am working in. So, one of those cape-type dampers will simply not work in the space I have to work in. Yes, the damper wings do not fully come together in the open position, which does hinder flow somewhat, but not enough to be of concern when reducing from 6 inches to 3 inches further up. I would recommend against spring-closure type dampers unless you cannot mount this type of damper vertically to use gravity alone to close the damper wings. Invariably, springs and the hinges of the wings will get gummed up with lint and other stuff like hair spray in a bathroom environment and damper operation becomes compromised. This damper is a good choice for vertical installations where space limits the use of cape-type dampers or you are minimizing the cost of such installations.
Date published: 2013-11-19
Rated 4 out of 5 by from Purchase of 6" damper The damper works as expected. The only problem is on a windy day it flaps open and closed causing noise.
Date published: 2016-01-01
Rated 5 out of 5 by from backdraft damper Used this backdraft damper on my range hood vent pipe. It installed into existing duct smootjhly. works perfectly with the range hood.
Date published: 2013-05-08
Rated 4 out of 5 by from Back draft damper Fit perfectly for over the range vent pipe. Installed close to outside wall to prevent possible cold air infiltration. Also installed an exterior hood with a flapper. So don't expect any issues but haven't had it over a winter yetime we'll see. Design is perfect flaps close perfectly when installed properly. May need maintenance at some point in the future however.
Date published: 2015-08-19
Rated 4 out of 5 by from Damper Good fit good price ordered on line & picked up at store very convenieny
Date published: 2016-01-13
Rated 5 out of 5 by from excellent quality very nice, light movement of the damper. Well sealed against backdrafts. Way better than the damper that came with the hood. there is no photo of installed because it is imbedded in the roof insulation.
Date published: 2013-11-12
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