4 Inch Duct
FailThe products selling today already average 4.6★, so 4 Inch Duct is a Fail.
- Flapen Score
- 42 / 100Ranks 530 of 845 Appliances niches · −3 vs the category median of 4542
- Market size
- $172K/yr126K searches / yr
- 90-day growth
- +1.4%search demand this quarter
- Competition
- 65%top-5 click share · 17 brands · 22 sellers
Flapen Score
4 Inch Duct against its category
The dotted line is the Appliances average. Past it, 4 Inch Duct is stronger. Inside it, weaker.
Market
The 4 Inch Duct market on Amazon at a glance
Shoppers on Amazon United States searched for 4 Inch Duct 126K times last year and spent an estimated $172K. The top 5 brands take 81% of clicks. Flapen scores it 42 out of 100, a Fail.
01 · Demand
An estimated 9.9% of those searches ended in a purchase.
Shoppers searched for this 126K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 9.9% of those searches ended in a purchase. Searches in the last 90 days moved +1.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $172K a year.
- Searches, last 12 months
- 126K
- Growth, 90 days vs prior 90
- +1.4%
- Conversion, latest week
- 9.9%
- Market size, estimated
- $172Ka year
- Peak month
- January1.2× the quietest month
- Top search term
- 4 inch duct24K searches a year
02 · Price
A sale here is worth $13.81.
Listings sell for $13.81 on average, from $5.64 to $36.74. Amazon reports units sold in ranges. This niche sold 15K to 20K a year. The average listing sells 500 to 750 of them. At $13.81 that is $7K to $10K a year per listing.
- Average price
- $13.81under the $15 to $100 sweet spot
- Price range
- $5.64–$36.74
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 15K–20K
- Units per listing a year
- 500–750
- Revenue per listing a year
- $7K–$10K
- Returns
- 3.1%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
88% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 4.1% of listings are out of stock. The average listing ranks #80 within Dryer Parts & Accessories. It carries 3,507 reviews at 4.62 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 88%
- Prime listings
- 100%
- Out of stock, average day
- 4.1%
- Average rank
- #80in Dryer Parts & Accessories
- Average rating
- 4.62 starsAmazon United States average 4.42 stars
- Average reviews
- 3,507per listing
- Listings tracked
- 24
04 · Newcomers
1 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 38 months on average, so the names here are settling in.
- Launched, last 12 months
- 2
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 38 months
Products
Top 4 Inch Duct products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 5, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Hon&Guan Dryer Vent Hose 4 Flexible Duct 16FT with 2 Duct Clamps Heavy-Duty Three Layer Protection Black PVC for HVAC Ventilation Duct Fan Systems
- Price
- $16.83
- Rating
- 4.3/5
- Reviews
- 9,156
- Age
- 7y ago

TEAIERXY 4 Inch 8 Feet Dryer Vent Hose Flexible Insulated Air Ducting Vent Hose PVC Aluminum Foil with 2 Clamps for HVAC Ventilation(Black)
- Price
- $8.93
- Rating
- 4.7/5
- Reviews
- 1,020
- Age
- 3y ago

AC Infinity Flexible 4-Inch Aluminum Ducting 8-Feet Long
- Price
- $12.93
- Rating
- 4.6/5
- Reviews
- 22,481
- Age
- 6y ago

VIVOSUN 4 Inch 25 Feet Flexible Aluminum Ducting with 2 Clamps Black
- Price
- $20.30
- Rating
- 4.6/5
- Reviews
- 8,589
- Age
- 11mo ago

AC Infinity Flexible 4-Inch Aluminum Ducting 25-Feet Long
- Price
- $21.73
- Rating
- 4.7/5
- Reviews
- 8,321
- Age
- 9y ago
Trending
estimated 90-day click momentum
Semboh 4 Inch Flexible Exhaust Duct Hose 3FT with 2 Clamps Nylon Air Duct for Bathroom Exhaust Fan Ceiling Vent Utility Room Ventilation Black
- Price
- $9.31
- Rating
- 4.5/5
- Reviews
- 38
- Age
- 6mo ago

iPower Flexible 4 Inch 8 Feet Aluminum Ducting 4 Layer Protection Dryer Vent Hose for HVAC Heating Cooling Exhaust and Ventilation 2 Clamps Included Gray New
- Price
- $5.64
- Rating
- 4.7/5
- Reviews
- 36
- Age
- 2y ago

Dryer Vent Hose 4 Inch x 7.2 FT Flexible Aluminum Duct-PVC Aluminum Foil Multi-Layer Air Ducting for HVAC Ventilation Exhaust Fan Grow Tent 2 Clamps Included
- Price
- $7.05
- Rating
- 4.6/5
- Reviews
- 102
- Age
- 6mo ago

VIVOSUN 4 Inch 25 Feet Flexible Aluminum Ducting with 2 Clamps Black
- Price
- $20.30
- Rating
- 4.6/5
- Reviews
- 8,589
- Age
- 11mo ago

HOOMESUN Dryer Vent Hose 4 Inch 3FT Heavy Duty Flexible Exhaust Duct Hose Thick 6-Ply Aluminum Foil Insulated Ducting for Tight Space HVAC Ducting Kit with 2 Clamps and 1 Tape
- Price
- $8.89
- Rating
- 4.5/5
- Reviews
- 1,189
- Age
- 2y ago
Newest
by launch date
Semboh 4 Inch Flexible Exhaust Duct Hose 3FT with 2 Clamps Nylon Air Duct for Bathroom Exhaust Fan Ceiling Vent Utility Room Ventilation Black
- Price
- $9.31
- Rating
- 4.5/5
- Reviews
- 38
- Age
- 6mo ago

Dryer Vent Hose 4 Inch x 7.2 FT Flexible Aluminum Duct-PVC Aluminum Foil Multi-Layer Air Ducting for HVAC Ventilation Exhaust Fan Grow Tent 2 Clamps Included
- Price
- $7.05
- Rating
- 4.6/5
- Reviews
- 102
- Age
- 6mo ago

Evecad 4 Inch Round Dryer Duct Straight Rigid Galvanized Steel Extendable Duct Extension Connector for Ventilation Equipment
- Price
- $18.17
- Rating
- 4.9/5
- Reviews
- 37
- Age
- 11mo ago

VIVOSUN 4 Inch 25 Feet Flexible Aluminum Ducting with 2 Clamps Black
- Price
- $20.30
- Rating
- 4.6/5
- Reviews
- 8,589
- Age
- 11mo ago

Dryer Vent Hose 4 Inch - Flexible Fire-Resistant Aluminum Duct with Stainless Steel Clamps for Tight Spaces Dryers Bathrooms Workshops Grill room & Grow Tents
- Price
- $7.14
- Rating
- 4.6/5
- Reviews
- 218
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 65% of clicks. Leaders hold, but buyers still shop past them.
Brands
17 rising
Sellers
22
Est. top-5 brand share
81%
Top 20: 100%
Est. top-5 click share
65%
Top 20: 97%
Open market
16%
- AC Infinity23%
- VIVOSUN20%
- TEAIERXY19%
- Hon&Guan16%
- YIJUHOU4%
- Steelsoft3%
- Open — no brand owns it (11 brands, 16%)
Demand
4 Inch Duct search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.2×
Search terms
Top 4 Inch Duct search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- 4 inch duct24K/yr
- 4 duct hose12K/yr
- 4 inch flexible duct12K/yr
- 4 flexible duct6K/yr
- 4 inch duct hose10K/yr
- 4 inch vent hose7K/yr
- 4 flexible duct hose for exhaust fan8K/yr
- 4 inch ducting5K/yr
- 4 vent hose5K/yr
- exhaust fan duct5K/yr
Reviews and returns
What reviews say buyers love and hate about 4 Inch Duct
We read the reviews and the return reasons for every product selling here.
“Sized Wrong”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
16 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 4 Inch Duct questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









