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Internet # 205715168

Model # KOM 100 U

Store SKU # 1001199648

4 in. Galvanized Back-Draft Damper with Rubber Seal

$16.58
  • Galvanized steel material is rust- and corrosion-resistant
  • Features a rubber gasket in a closed position to prevent leakage
  • Perfectly and easily fits inside a 4 in. round duct
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Product Details

About This Product

VENTS 4 in. KOM 100 U round back valve is especially designed to prevent back-draft. The spring loaded back-draft damper is manufactured of galvanized steel and contains rubber seal. Easily fits into your vent system, the installation requires minimal labor and time.

Highlights

  • Prevents outside air from penetrating the home
  • Rubber gasket in closed position ensures minimal leakage
  • Well-balanced
  • Inserts into duct for simple installation
  • Fits into 4 in. round ducting
  • Horizontal installation only
  • Return Policy

Product Information

Internet # 205715168

Model # KOM 100 U

Store SKU # 1001199648

Specifications

Dimensions: H 3.13 in, W 3.88 in, D 3.88 in

Dimensions

Product Depth (in.)

3.88 in

Product Height (in.)

3.13 in

Product Width (in.)

3.88 in

Details

Brand/Model Compatibility

All Brands

HVAC application

Ventilation

Pack Size

1

Product Weight (lb.)

0.5 lb

Returnable

90-Day

Warranty / Certifications

Manufacturer Warranty

The manufacturer warrants to the original purchaser of its products that it will be free from defects in materials or workmanship for a period of 12 months from the date of original purchase

Questions & Answers

22Questions
caret
Q:Would a 50cfm bathroom exhaust fan produce enough force for this to operate correctly?
by|Feb 27, 2024
1 Answer
Answer This Question

A:  Yes, the KOM 100 backdraft damper will be sufficient. But, all bathroom fans should have a plastic gravity damper already built-in. In this case you do not need an extra backdraft damper since the system already has one.

by|Feb 27, 2024
    caret
    Q:Can this be inserted into the back of the dryer and then connected to the dryer hose?
    by|Dec 10, 2023
    2 Answers
    Answer This Question

    A:  No, the KOM series is a spring loaded damper and it is not suitable for this application. It would collect the lint and could be a fire hazard. You would need a gravity damper, which is in most ventilation hoods that can be found on the outside wall.

    by|Feb 7, 2024

      A:  I'm just a homeowner, but my understanding is that a draft damper, if used, must be installed near vent end exiting house.

      by|Mar 6, 2024
        caret
        Q:What is the maximum ambient temperature for this damper?
        by|Dec 4, 2023
        1 Answer
        Answer This Question

        A:  Temperature up to +212 °F

        by|Mar 18, 2024
          caret
          Q:Can this damper be used in fireplace vent exit to prevent air from outside of the house? Manufacturer, Please ANSWER all questions here.
          by|Nov 25, 2023
          0 Answer
          Answer This Question
          Showing 1-4 of 22

          Customer Reviews

          4.5 out of 5

          • 4.5 out of 114 reviews
          • 93% recommend this product
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          Showing 1-10 of 114 reviews
          Poor Quality
          This almost doesn’t feel like what I ordered. Very lightweight and cheaply put together. There’s a pretty good size crack in the middle when the damper is shut; it doesn’t really help keep out the cigarette smoke from coming in from neighboring units. (Installed in a condo).
          by
            4 found this review helpful
            No problems at all with installing it, just need to follow the markings on it to get it in the correct orientation. Springs seem strong and damper closes securely against rubber seal.
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            The air vent check was just what I needed to complete my laundry room ventilation fan install. This is a spring check, so I was able to mount it horizontally. Used with a inline blower fan. Heavy duty and works well.
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            • Verified Purchase
            Yes indeed very good quality products ??
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            Showing 1-10 of 114 reviews