Continental Fan Manufacturing BDD100 Spring Loaded Backdraft Damper for 4" Ducting

- Item #: BCI1471536

Offer Ends

Originally $19.00, You Save 14%
Free Shipping on orders over $49.00!
0 In Stock
Ships in: 3 to 4 weeks


Please select a finish

Earn 16 points with the purchase of this product Learn More

and earn 350pts

Questions about Continental Fan Manufacturing BDD100?

Contact us for advice or more details. Our product specialists are here to help.

Spring Loaded Backdraft Damper for 4" Ducting

Dampers function as flow regulators and prevent ventilation when not desired, such as when the system is not in use. Let us provide all the accessories needed to install an AXC In-Line Duct Fan or EXT External Mount Exhaust Fan.

Continental Fan Company was established in 1986 to manufacture and distribute quality ventilation equipment. Their objectives then were simple… to provide superior products, dependable service, and competitive pricing. They remain unchanged today.


  • Neoprene damper seal minimizes leakage
  • 20 gauge steel housing, aluminum spring loaded butterfly damper blades
  • Gasket designed to withstand temperatures from -22° F to 180° F
  • Requires from 0.04 to 0.08 inches wg pressure to open
  • Simple installation in any position, entire assembly inserts into duct
  • Exterior foam gasket assures a tight seal against duct
  • Includes stamped metal sleeve with center pin design
  • Fits 4" Round ducting

Additional Continental Fan Manufacturing Links

Our SKU: Continental Fan Manufacturing BDD100

This product is listed under the following manufacturer number(s):

  • Continental Fan Manufacturing BDD100

*Denotes a finish or option that has been discontinued

Continental Fan Manufacturing BDD100 Product Specifications

Depth 2
Duct Size 4" Round
Function Backdraft Damper

Installation Resource Center

Whether you are installing the product yourself or hiring a professional, our installation Resource Center has everything you need to get your project done. Visit the Installation Resource Center to get started.

Continental Fan Manufacturing BDD100 Reviews

Rated 5 out of 5 by from Backdraft Damper This works very well and has a good seal around the spring loaded butterflies. Only time will tell if it holds up the the once a day humidity without sticking or rusting closed.
Date published: 2012-11-28
  • Is this suitable for use in a gas dryer exhaust duct ?

    A. The Continental Fan Manufacturing BDD100 is not recommended for use in a gas dryer application.
  • Will this backdraft damper (BDD100) keep the cold air from blowing in my fresh air vent for my furnace .. my furnace runs every 10 min when the wind is blowing and you can feel the cold air draft in the gas furnace return.. Is there a hood that works well with this damper.. I have condsation in my flex vent from the cold air coming in all the time

    A. Because they are designed to work with exhaust vents, not intake vents, backdraft dampers stop air from coming into the house, or in your case the furnace combustion chamber, at all. Please consult either the manufacturer of your furnace or the person/company who installed your furnace.

Buy the Continental Fan Manufacturing BDD100 at Research Continental Fan Manufacturing BDD100 online. Find Continental Fan Manufacturing BDD100 features and specifications. Get the best deal by comparing the Continental Fan Manufacturing BDD100 today.

Recently viewed items
× Shipping Rates & Methods

The cost to ship items varies by item, shipment and shipping option.

Free Ground Shipping on Orders Over $49 *

Standard ground shipping transit time is 5-7 business days.

Free Freight Shipping on Orders Over $1500 *

Curb side delivery (also called freight or "LTL" shipping) is reserved for large, heavy, or oversized items like chandeliers, bathtubs, shower doors, etc. Items are palletized and loaded onto a large truck for shipment, and delivered to your curb by scheduled appointment. Transit time is 7-10 business days.

* For exact shipping costs, add the product(s) to your cart and enter your zip code. All offers pertain to the lower 48 states and do not include deliveries to Alaska, Hawaii or Canada.

Learn more about shipping rates and policies