Search  for anything...
Hon&Guan

[Upgraded] Hon&Guan 6 Inch Backdraft Damper Draft Blocker, One-Way Airflow Duct Damper 6 Inch Ducting Insert Backflow Preventer Inline Fan Vent Deflector-Black

  • Based on 33 reviews
Condition: New
Checking for the best price...
$13.99 Why this price?
Prime Day Deal · 78% off was $64.98

Buy Now, Pay Later

As low as $3 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Jun 30
Order within 22 hours and 34 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Size Name: 6 Inch


Features

  • Upgrade Design The 6 inch damper on both sides of the top and bottom of the two new concave inward pressure rib, and increase the thickness to 0.6mm,to ensure that the product is more solid, not easy to damage.
  • MaterialThe 6 inch backdraft damper is made of a galvanized steel with black powder coat to withstand temperatures up to 140F, the axis are made of aluminum, while the spring are made of carbon steel. Rugged and corrosion-resistant to keep you venting smoothly
  • Installation MethodThe vent damper 6 inch has an opening of 150 mm and a length of 88 mm. When installed horizontally, the spring should be positioned horizontally so that it can be opened and closed optimally.
  • Lightweight Valve WingsThe valve wings open under the pressure created by the airflow; when the air flows in the opposite direction, it is automatically closed under the action of the spring, so as to cut off the flow. Rubber ring ensure 100% closure and quiet closing.
  • Wide ApplicationThe 6 inch duct draft blocker valves can be inserted into ventilation dryer vent hose. Designed for use with range hoods, bathroom fans, kitchen and other home HVAC applications

Material: Galvanized Steel, Aluminum, Carbon Steel


Brand: Hon&Guan


Exterior Finish: Galvanized Steel with Black Powder Coat


Inlet Connection Size: 6 Inches


Inlet Connection Type: Barb


Outlet Connection Type: Smooth Bore


Number of Ports: 2


Outlet Connection Size: 6 Inches


Number of Packs: 1


Smart Home Compatibility: Not Smart Home Compatible


Exterior Finish: Galvanized Steel with Black Powder Coat


Inlet Connection Type: Barb


Outlet Connection Type: Smooth Bore


Number of Ports: 2


Smart Home Compatibility: Not Smart Home Compatible


Thread Size: 6 inches


Valve Type: Check Valve


Inlet Connection Size: 6 Inches


Outlet Connection Size: 6 Inches


Size: 6 Inch


Brand Name: Hon&Guan


Model Number: B0F6BTB78X


Manufacturer: Hon&Guan


Unit Count: 1.0 Count


Material Type: Galvanized Steel, Aluminum, Carbon Steel


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jun 30

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • I would recommend this
Size Name: 6 Inch
Works great, keeps bugs & rain out.
Reviewed in the United States on April 29, 2026 by Birdman
    • Easy installation
Size Name: 4 Inch
Finally I found the trick to avoid cold air getting inside my home.
Reviewed in the United States on March 28, 2026 by F. Lambert
    • GREAT ITWM
Size Name: 4 Inch
WORKS GREAT. HELP KEEP COLD AIR OUT DURING WINTER TIME
Reviewed in the United States on May 3, 2026 by glen
    • Backdraft Damper
Size Name: 6 Inch
The quality of the backdraft damper is excellent. It did fit inside the exhaust pipe perfectly and to date it is working perfectly.
Reviewed in the United States on October 19, 2025 by Michael
    • Funciona perfecto
Size Name: 6 Inch
Funciona perfecto!
Reviewed in the United States on April 24, 2026 by Paola Vargas
    • Slightly too weak to fully close reliable
Size Name: 6 Inch
I know it's probably hard to get the spring strength right in an application like this (to prevent loss of airflow), but this one is just too weak. At least on the item I received. I returned it and got a different one which was perfect. The build quality is good though.
Reviewed in the United States on January 18, 2026 by Benjamin B.
    • Great
Size Name: 4 Inch
Perfect actually slides right inside of a 4-in dryer pipe
Reviewed in the United States on January 7, 2026 by Erich M.
    • Adirondack approved
Size Name: 4 Inch
I live in upstate NY. Went through few week of subzero lows and single digit highs. A few minutes after the cycle finished the clothes in the dryer were so cold you couldn't tell if they were dry or damp. Installed this damper and the clothes now stay warm for over a hour (the longest I have checked) after the cycle finishes. ... show more
Reviewed in the United States on February 15, 2026 by Almost_retired

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...