backdraft damper
Skip itA small market ($41K/yr) — this niche doesn't clear our bar today.
Avg price
Good$14.36avg listing price — sweet spot $15–$100
Review moat
Good796.33avg incumbent reviews — the moat a new listing must climb
Conversion
Good5.3%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Price range
Okay$7.93–$19.65cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay86%top-5 brand share — brands hold most of the demand
Returns
Okay4.8%return rate — above 5% kills the launch gate
Competition
Bad72%top-5 click share — a locked-up shelf
Growth
Bad-26.0%90-day search growth — must beat 0% to launch
Market size
Bad$41K$41K/yr · 54K searches
According to Flapen's Amazon United States niche tracking, backdraft damper is a $41K/yr Amazon United States market (54K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Jan–Jul. Verdict: Skip it — 33/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
backdraft damper market data
- Units sold / yr
- 4K–5K
- avg 250–500/product
- Revenue / yr
- $57K–$72K
- units × avg price
- Conversion rate
- 5.3%
- Avg BSR
- #509
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 87%
- Out of stock
- 0.0%
- Avg brand age
- 46 months
- Avg seller age
- 184 days
Competition & brand share
The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.Brands
11 falling
Sellers
21
Top-5 brand share
86%
Top 20: 100%
Top-5 click share
72%
Top 20: 100%
Open market
11%
- Kikerike44%
- AC Infinity14%
- Hon&Guan11%
- FRESH SPEED10%
- MIVIDE6%
- Teqooza3%
- Open — no brand owns it (5 brands, 11%)
Demand & seasonality
Weekly Amazon search volume, last 77 weeks — -26.0% search growth over the last 90 days.Peak months: Jan, Jul · busiest ÷ quietest = 1.7×
Top backdraft damper search terms
- backdraft damper13K/yr
- 4 inch backdraft damper4K/yr
- 4 backdraft damper5K/yr
- dryer vent damper4K/yr
- vent damper4K/yr
- 4 inch duct damper3K/yr
- exhaust fan damper4K/yr
- backdraft damper 4 inch3K/yr
- 4 inch damper3K/yr
- dryer vent draft blocker4K/yr
Top backdraft damper products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 15 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Kikerike$9.754.5★1,281 rev
AC Infinity 4 Backdraft Damper One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 4 Ducting in Range Hoods and Bathrooms Fans
AC Infinity$17.614.6★2,036 rev
FRESH SPEED 4-Inch Backdraft Damper Shutter Inline Spring Loaded for Dryer Duct
FRESH SPEED$14.244.6★517 rev
![[Upgraded] Hon&Guan Duct Damper 4 inch Backdraft Damper One-Way Airflow Backflow Preventer for 4 Inch Duct Dryer Vent Hose-2pcs](https://m.media-amazon.com/images/I/41kDKK2bNjL.jpg)
[Upgraded] Hon&Guan Duct Damper 4 inch Backdraft Damper One-Way Airflow Backflow Preventer for 4 Inch Duct Dryer Vent Hose-2pcs
Hon&Guan$16.914.4★238 rev
MIVIDE 2Pack 4 inch Backdraft Damper Duct One Way Airflow Ducting Insert for Ducting in Range Hoods Bathrooms Fans and kitchen Fan
MIVIDE$18.714.6★198 rev
Newest
by launch date![[Upgraded] Hon&Guan 4 Inch Backdraft Damper Draft Blocker One-Way Airflow Duct Damper 4 Inch Ducting Insert Backflow Preventer Inline Fan Vent Deflector-Black](https://m.media-amazon.com/images/I/41HD+fyAMUL.jpg)
[Upgraded] Hon&Guan 4 Inch Backdraft Damper Draft Blocker One-Way Airflow Duct Damper 4 Inch Ducting Insert Backflow Preventer Inline Fan Vent Deflector-Black
Hon&Guan$10.0672 rev
[Upgraded] Hon&Guan Duct Damper 4 inch Backdraft Damper One-Way Airflow Backflow Preventer for 4 Inch Duct Dryer Vent Hose-2pcs
Hon&Guan$16.91238 rev
Teqooza 4 Inch Backdraft Damper Inline Extractor Fan Vent Back Draught Shutter Flexible One-Way Airflow Ducting ABS Plastic White
Teqooza$7.935 rev
QWORK 4 Inch Galvanized Backdraft Damper Duct Manual Volume Damper with Sleeve for HVAC Air Balancing Systems Range Hoods and Fans - Adjustment Airflow Ducting Branch
QWORK$16.4330 rev
4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector - Black
Kikerike$9.881,281 rev
Trending
90-day click momentumMIVIDE 2Pack 4 inch Backdraft Damper Duct One Way Airflow Ducting Insert for Ducting in Range Hoods Bathrooms Fans and kitchen Fan
MIVIDE$18.714.6★
[Upgraded] Hon&Guan Duct Damper 4 inch Backdraft Damper One-Way Airflow Backflow Preventer for 4 Inch Duct Dryer Vent Hose-2pcs
Hon&Guan$16.914.4★
Therwen Backdraft Damper Duct Manual Volume Damper with Sleeve Galvanized Sheet Adjustment Airflow Ducting Branch HVAC Air Balancing for Range Hoods Fans(1 Pc 4 Inch)
Therwen$19.654.6★
AC Infinity 6 Backdraft Damper One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 6 Ducting in Range Hoods and Bathrooms Fans
AC Infinity$19.654.6★
QWORK 4 Inch Galvanized Backdraft Damper Duct Manual Volume Damper with Sleeve for HVAC Air Balancing Systems Range Hoods and Fans - Adjustment Airflow Ducting Branch
QWORK$16.434.6★
What buyers say about backdraft damper
What buyers praise and complain about, mined from review topics.What buyers love
“A very well-made product at nominal cost”
“Good value”
“Correct installation is everything”
“Function”
“Fits and work well”
“If you follow those simple rules this thing works great”
“as advertised”
“Nicely engineered”
“Flap works well though”
“It working just fine to prevent back flow”
What buyers complain about
“Even then, they flutter and make a lot of noise”
“dont buy this gasket broke flipper did not work like thay should very cheap made junk did not last a day”
“Bad company practice to resell returned products as new”
“Quality control”
“Sticks in the open position”
“Is NOT 4 is smaller”
“Not working that great”
“The flapper is extremely fragile”
“overprice”
“there was nothing in this item description saying anything along the lines of minimum usable cfm”
Top return reasons
Common questions
- Is backdraft damper profitable to sell on Amazon United States?
- The niche generates $41K/yr across 15 tracked products. 90-day search growth is -26.0%. Flapen's verdict: Skip it (33/100).
- How competitive is the backdraft damper niche?
- 11 brands and 21 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 86% of demand.
- What do buyers complain about in backdraft damper?
- Top complaints mined from reviews: Noise Level, Durability, Product Condition. The return rate is 4.8%.
- When does demand for backdraft damper peak?
- Demand peaks in Jan–Jul; the busiest month runs 1.7× the quietest.
- What does it cost to enter the backdraft damper niche?
- Listings span $7.93–$19.65; the average listing price is $14.36 (sweet spot $15–$100). The average incumbent carries 796 reviews — the moat a new listing must climb.