RSK Series 8" Duct Backdraft Damper Zoom

RSK Series 8" Duct Backdraft Damper

SKU:RSK8

Brand: Fantech

Fantech
Qty Price
$18.95
/ each
$179.50 / box (10 units x $17.95)
In Stock! Ships in 24-48 Hours
(3 Available)
0

Resources

Specs

Duct Size: 8"
Material: Galvanized Steel
Lightweight Aluminum
Type: Spring Loaded
Warranty: 5-Year Warranty

Description for Fantech RSK8

Backdraft dampers with galvanized steel collar and lightweight aluminum damper blades. Spring loaded for positive closure.

RSK Series 8" Duct Backdraft Damper

REVIEW SNAPSHOT®

by PowerReviews
FantechRSK Series 6" Duct Backdraft Damper
 
4.2

(based on 37 reviews)

Ratings Distribution

  • 5 Stars

     

    (21)

  • 4 Stars

     

    (9)

  • 3 Stars

     

    (4)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

97%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

No more cold drafts in the kitchen

When my house was built, the gas cooktop was vented out through the slab by an 8" PVC pipe which was just left as an open bricked in hole in the ground. I...Read complete review

When my house was built, the gas cooktop was vented out through the slab by an 8" PVC pipe which was just left as an open bricked in hole in the ground. I covered it with a metal chimney cap to keep pests out, but every winter the cold air blows in through the downdraft on the stove.

This 8" damper slid right into the PVC pipe perfectly creating an excellent seal and opens properly when the down draft exaust fan turns on. When the fan stops the damper shuts tight and no more drafts in the kitchen.

VS

Most Liked Negative Review

 

Works okay after a little tweeking

I installed this in the ductwork from a bathroom fan that I recently put it that has a damper that does not seal very well. Since my duct run was mostly horizontal this damper...Read complete review

I installed this in the ductwork from a bathroom fan that I recently put it that has a damper that does not seal very well. Since my duct run was mostly horizontal this damper would not close 100% of the time and would let a small draft in. I had to take the damper apart and flip the spring around a put a half turn on it to help close the damper doors more securely. I think my bath fan is only an 80 cfm unit it still opens the damper fine. If this is installed in a vertical orientation and gravity would help close it I think it would work fine. Other option is to find a slightly stronger spring.

Reviewed by 37 customers

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5.0

Damper worked great

By Scott the Carpenter

from PA

Verified Buyer

Comments about RSK Series 6" Duct Backdraft Damper:

Good company to order these items. Shipped very quickly.

 
4.0

Works Great

By Tom

from Rochester, ny

Verified Buyer

Comments about RSK Series 4" Duct Backdraft Damper:

10 dryers connected together were back drafting together, now they are working correctly

 
5.0

good service

By none

from new bern nc

Verified Buyer

Comments about RSK Series 4" Duct Backdraft Damper:

none

 
4.0

Just what I needed - fast shipping

By Pokie

from Philly

Verified Buyer

Comments about RSK Series 6" Duct Backdraft Damper:

Used for additional back-draft protection for Range Hood and bath exhaust fan.

I love this is slips inside duct work. The price was very reasonable.

The shipping was so fast I couldn't believe it - less than 24 hours in my case.

 
4.0

Good Backdraft damper

By DANO

from Middleton, Idaho

Verified Buyer

Comments about RSK Series 5" Duct Backdraft Damper:

IT IS GOOD FOR KEEPING COLD AIR FROM GETTING IN THROUGH THE RANGE HOOD.Does not seal real good, or would have given 5 stars.

 
5.0

i would buy this product again

By bumpy

from ohio

Verified Buyer

Comments about RSK Series 12" Duct Backdraft Damper:

could use a crimp one end

 
4.0

Better than Most

By mainecooncat

from Woodbridge, NJ

Verified Buyer

Comments about RSK Series 4" Duct Backdraft Damper:

Better than most for backdraft protection installed at the output of a bathroom ventilation fan. If used in a horizontal duct, be sure to turn it so that the rod the two flappers pivot on are in a vertical position so that the upper flapper does not have to fight gravity to close fully.

 
5.0

Cheap, wellmade, works

By BigRockr

from Illinois

Verified Buyer

Comments about RSK Series 6" Duct Backdraft Damper:

What else can I say. I was getting tons of cold air back thru my Microwave/Range hood combo. Installed in attic and no more cold air!

 
4.0

PRODUCT NEEDS BETTER SPRINGS

By JUSTANOTHERDAYINPARIDISE

from PITTSBURGH,PA.

Verified Buyer

Comments about RSK Series 10" Duct Backdraft Damper:

HAD TO INSTALL SCREWS IN DUCT WORK TO PREVENT THE DAMPER FROM FLOPPING OVER TO THE OTHER SIDE.
ONCE I MADE THIS EASY ADJUSTMENT THE DAMPER WORKED JUST FINE.

 
5.0

If I needed another this is the one!

By A.T.C Maintenace Man

from Jamestown ND

Verified Buyer

Comments about RSK Series 8" Duct Backdraft Damper:

This worked perfect for my application. I am HVAC by trade and this was for a DIY project at my home. My wife runs a daycare out of our home and I am adding a second furnace. When used properly I found no problems what-so-ever. Also the customer service was GREAT thanks.

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Q&A: Ask the Questions, share answers

Do you have questions about this product?

get answers from real customers and in-house experts with AnswerBox.

6 Questions | 23 Answers
Displaying questions 1-6
  • RSK Series 6" Duct Backdraft Damper

    Q:

    Is this damper installed between to motor and the grill, or between the motor and the outside exhaust?
    Asked on 2/5/2014 by DIY Joe from Ny

    6 answers

    • VERIFIED BUYER

      A:

      You can put it anywhere in the exhaust line. I try to locate it wherever the insulation is so that you might minimize conductive heat loss from cold air entering through your duct.
      Kevin Murphy

      Answered on 2/6/2014 by Anonymous
    • VERIFIED BUYER

      A:

      I have it between the motor and outside exhaust, to prevent cold air from seeping into the system. Works quite well.
      Sent from my iPad

      Answered on 2/5/2014 by Anonymous
    • VERIFIED BUYER

      A:

      You install it on the intake side. Between the intake and the unit. It is suppose to close when the unit is off so no outside air gets into the unit. The spring on the doors are a little weak and it does not close all the way. I also recommend installing the extra filter unit they have. It traps all out side dirt from getting into the unit. Hope this helps.

      Answered on 2/5/2014 by Anonymous
    • VERIFIED BUYER

      A:

      For me, the damper is installed with a kitchen range hood. So the damper is between the motor/fan and the exhaust.
      Ron
      Sent from my iPhone

      Answered on 2/5/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Hello,
      I'm not sure what unit you are using, but I installed 4 of these valve/dampers on my air exchanger. I mounted them on the outside of the unit where the ductwork attaches to the unit. They are just to reduce the back flow of cool air back into the unit when the unit is not running. I don't run my exchanger very often, but so far the dampers have worked well.
      Hope this helps,

      Answered on 2/5/2014 by Anonymous
    • VERIFIED BUYER

      A:

      The damper is designed to be installed in a vertical duct before the motor.

      Answered on 2/5/2014 by Anonymous
  • RSK Series 4" Duct Backdraft Damper

    Q:

    Can I install this between my dryer and an exhaust duct that has other dryers attached to the exhaust duct. I am in condo on 2nd floor. When other dryers run, their exhaust comes inside my dryer and into the unit with smells and heat. My concern is that if other dryers are running and mine is not that the damper may work fine, but if I run my dryer when others are also running I am concerned that the damper may not open and vent my dryer
    Asked on 7/25/2013 by John the handyman from Miami, FL

    10 answers

    • VERIFIED BUYER

      A:

      works fine in two locations for me

      Answered on 7/26/2013 by Anonymous
    • VERIFIED BUYER

      A:

      this product should not be used for a dryer vent due to lint build up and possible blockage. I suggest installing a fan tech booster in line fan that should be wired to run weather 1 or more dryers are running.

      Answered on 7/25/2013 by Anonymous
    • VERIFIED BUYER

      A:

      I don't think that this 4" Duct Backdraft Damper is designed to handle lint from driers. I am using it to prevent backdrafts with a room exaust fan. The application you plan will make it inaccessible for cleaning and may result in a fire. The danger is that this damper will get lint build up on the wire axle. Blown lint collecting on the axle may result in the damper getting stuck in the closed position. Without free air flow the dryer can overheat igniting any lint in the dryer and/or ducts. Dampers exist that are designed for handling lint like the "Cape Backdraft Damper".
      It might be that you have a damper on your dryer but it is clogged with lint and stuck in the open position. Cleaning of the vent is a regular maintanence procedure that should be followed in any case. There are likely local code requirements that were not met by this installation if you have no damper installed. The common pipe needs to be much larger thatn 4", and all dryers connected to it are supposed to have backdraft dampers.

      Answered on 7/25/2013 by Anonymous
    • VERIFIED BUYER

      A:

      John...
      No, sorry, the pressure from the other dryers will keep this from opening, just as you thought. A solenoid operated or motorized damper is what you need.
      Another thing to consider...I had this same problem crop up with a condo owner who is a client of mine. We ended up using a Fantech dryer booster fan, which runs only when the dryer is on. Worked like a charm.
      Good luck,
      Erik Klaproth
      Sent from Windows Mail

      Answered on 7/25/2013 by Anonymous
    • VERIFIED BUYER

      A:

      I think there's a danger this in-line damper will become clogged with lint
      if not cleaned on a VERY regular basis. If that happens it will not only
      cease to stop back drafts but can also become a fire hazard. (I think some
      building codes do not even allow sheet metal screws to protrude into clothes
      dryer ducts for fear they will collect lint.)
      The other unknown is your condo complex might have a partially clogged "main
      duct" that carries dryer exhaust from each condo to a point outside the
      building. Your problem may simply be the result of neighbor's exhaust
      following the path of least resistance into your condo, and the problem
      might disappear entirely if the main duct (or point where the main duct
      exits the building) is properly cleaned out.

      Answered on 7/25/2013 by Anonymous
    • VERIFIED BUYER

      A:

      Your concern is valid, it all comes down to how much pressure you can
      develop across the damper. I think that your chance of success is very high.
      The reason is that you currently use the dryer without regard to who else is
      also using their dryer, so you obviously can provide flow into the main duct
      regardless of other users. The flow is also adequate to keep the vent
      thermostat in your dryer from shutting the dryer down due to high vent
      temperatures i.e. just normal operation. Therefore, when your dryer starts
      it will easily overcome the main duct pressure and begin to open the damper.
      The air pressure immediately equalizes on both sides of the damper. The
      damper vanes then just act like "sails" and the air flow holds them open.
      They are frequently flat against each other right in the middle of the pipe
      during operation. That would not necessarily be the case if you install the
      damper with the shaft horizontal as the picture below . With this
      installation the lower vane must also open against gravity. This is not
      desirable. Install the damper in a horizontal run of pipe or plastic duct
      and set the vane axle so it is vertical. This damper should do everything
      you need! Good Luck!
      Norm
      http://s3.pexsupply.com/images/products/large/rsk4-2.jpg

      Answered on 7/25/2013 by Anonymous
    • VERIFIED BUYER

      A:

      I used the damper to prevent a draft coming in to the house from the outside when it was windy through my cooker hood. It works very well, you hear it snap shut when the fan on the hood turns off and it stopped the draft dead in it's tracks. If your dryer has enough force it will open easily in the intended direction. Does you dryer have a fan to exhaust the hot air, if it does then you should use this product. If not then select one that does not have the spring mechanism to force it closed, that will acommplish the desired outcome.

      Answered on 7/25/2013 by Anonymous
    • VERIFIED BUYER

      A:

      To be honest with you I can't answer your question with certainty. I will
      tell you that for my application I have had no issues and it may give you
      some insight into what you are trying to do and if it would work.
      I use the vent to block cold air from back flowing into my house from the
      exhaust fan on my gas range. The exhaust fan is approximately 8 - 10 feet
      from the damper and then another 4 - 5 feet to the exhaust on the side of
      the house. This is a pretty large run. When the fan is on and
      smoke/exhaust is being pushed through the vent and the damper I have never
      had any problem. The spring on damper does not offer too much resistance.
      I think that it would still work for your application even if the
      neighbor's driers are running.
      Worst case scenario you're out a couple of dollars and you have to remove
      the damper from your vent. I don't think it would take much effort to test
      out your theory.
      Hope this helps.

      Answered on 7/25/2013 by Anonymous
    • VERIFIED BUYER

      A:

      This damper is very easy to open. The springs do not provide much
      resistance so it should not be a problem for your drier to open it.

      Answered on 7/26/2013 by Anonymous
    • VERIFIED BUYER

      A:

      Hi. This damper may do just what you are trying to achieve. It needs
      very little force to open and it has a bit of a seal to keep it shut on
      back draft - it seats quite well. I am using it successfully with a duct
      fan, which I believe has less flow/pressure than a dryer does.
      Hopefully, this will solve the annoyance with air coming back to your
      place from the neighbors.
      Ideally, each dryer would be vented individually, but... that is beyond
      your control.

      Answered on 7/26/2013 by Anonymous
  • RSK Series 4" Duct Backdraft Damper

    Q:

    Will this backdraft damper work at the vertical position of the Y adapter for an inline bathroom ventilator (FR110)? Will it fit inside the top of the adapter or is a adapter collar needed?
    Asked on 7/26/2012 by DD

    3 answers

    • VERIFIED BUYER

      A:

      The RSK damper will work in both a horizontal or vertical position. These
      are well made and do a great job doing what they are designed to do, stop
      the back draft.

      Answered on 7/26/2012 by Anonymous
    • CUSTOMER CARE

      A:

      If you are using an FR110 I would not suggest splitting the Fan into 2 areas. I am not exactly sure if it will mate up to the Y exactly; I would put it in the duct up the line.

      Answered on 7/31/2012 by PexSupply Staff from NY
    • VERIFIED BUYER

      A:

      There is a good chance it will work in the vertical position. Depending upon
      whether you want it to open in the up position or the down position will
      make a big difference. Also, I was able to shorten the damper I used by just
      cutting off a ring of damper duct on the upstream side with no problems. It
      would then fit in a tight location.

      Answered on 8/1/2012 by Anonymous
  • RSK Series 6" Duct Backdraft Damper

    Q:

    I'm looking for a backdraft damper I can use with a kitchen hood. From the hood my duct goes vertical at first, turns horizontal then vertical again. Can this damper be installed in the vertical section with airflow UP? I noticed some comments on the springs on this model not always closing the flaps tightly. I would think if the butterfly is pushed up by the airflow it would drop back nicely when the fan shuts off. Are there any problems using an inline butterfly type damper with a stove hood (ie:do they gum up)? I do have a flapper on the external vent but it doesn't close completely and I don't want cold air backflow when the fan is off. Thanks.
    Asked on 3/25/2011 by DIY from Cary, NC

    1 answer

    • CUSTOMER CARE

      A:

      According to the manufacturer, you can use these dampers going vertically. You can only use them in a horizontal run if the hinge pin is vertical. They are spring-loaded, so they shouldn't get gummed up.

      Answered on 3/29/2011 by PexSupply Staff from NY
  • RSK Series 6" Duct Backdraft Damper

    Q:

    can this be installed vertical with a downward thrust
    Asked on 1/17/2011 by Anonymous from anaconda, mt

    1 answer

    • CUSTOMER CARE

      A:

      The product would not work in a vertical downward thrust application.

      Answered on 1/21/2011 by PexSupply Staff from NY
  • RSK Series 4" Duct Backdraft Damper

    Q:

    Is this product safe to use in a GAS DRYER duct ?
    Asked on 1/7/2011 by ng0n from kc,mo

    2 answers

    • CUSTOMER CARE

      A:

      We do not recommend using a backdraft in a dryer booster system. Lint would get caught on it and restrict the line.

      Answered on 1/20/2011 by PexSupply Staff from NY
    • VERIFIED BUYER

      A:

      I would not put one in as it would collect lint and be a fire hazard. Also the foam gasket might not hold up to the heat and also be a fire hazard. I think the louvered vent on the outside wall is your best bet.

      Answered on 2/17/2011 by BilltheEngineer from Smithtown, NY
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