4 inch vent cover
Worth a lookShows a fragmented shelf (top 5 take 39% of clicks), but a small market ($114K/yr) keeps it on the watch list.
Competition
Great39%top-5 click share — an open shelf
Price range
Great$6.18–$42.43cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$15.14avg listing price — sweet spot $15–$100
Brand share
Good62%top-5 brand share — brands hold most of the demand
Conversion
Okay3.9%search→purchase rate — share of searches ending in a sale
Review moat
Okay1,931.02avg incumbent reviews — the moat a new listing must climb
Growth
Okay+15.6%90-day search growth — must beat 0% to launch
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Returns
Okay4.1%return rate — above 5% kills the launch gate
Market size
Okay$114K$114K/yr · 193K searches
According to Flapen's Amazon United States niche tracking, 4 inch vent cover is a $114K/yr Amazon United States market (193K searches/yr). The top 5 brands hold 62% of demand. Demand peaks in Jun–Nov. Verdict: Worth a look — 52/100.
Data updated Jul 5, 2026 · scored weekly · How we score niches
4 inch vent cover market data
- Units sold / yr
- 8K–10K
- avg 100–250/product
- Revenue / yr
- $121K–$151K
- units × avg price
- Conversion rate
- 3.9%
- Avg BSR
- #224
- Page quality
- 0%
- Prime
- 98%
- Sponsored
- 90%
- Out of stock
- 0.0%
- Avg brand age
- 40 months
- Avg seller age
- 173 days
Competition & brand share
Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.Brands
28 rising
Sellers
70
Top-5 brand share
62%
Top 20: 93%
Top-5 click share
39%
Top 20: 78%
Open market
35%
- Deflecto29%
- Funmit12%
- Hon&Guan8%
- no-pest vent7%
- Hydencamm5%
- Zhanmai4%
Demand & seasonality
Weekly Amazon search volume, last 108 weeks — +15.6% search growth over the last 90 days.Peak months: Jun, Nov · busiest ÷ quietest = 2.0×
Top 4 inch vent cover search terms
- vent covers for outside15K/yr
- metal dryer vent cover14K/yr
- deflecto dryer vent cover12K/yr
- exterior vent covers16K/yr
- 4 inch vent cover17K/yr
- outside vent covers for house13K/yr
- dryer vent flap13K/yr
- exterior vent covers for house9K/yr
- outdoor vent covers for house11K/yr
- 4 vent cover8K/yr
Top 4 inch vent cover 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Deflecto Outdoor Dryer Vent Cover 4-Inch with Louvered Gravity Damper White
Deflecto$7.534.6★12,390 rev
4 Inch Outdoor Dryer Vent Cover Louvered with Screen for Exterior Wall
Funmit$12.644.3★4,528 rev
no-pest vent Dual Door Dryer Vent Cover Outdoor 4 inch Made in USA w Highest Quality UV Resistant Plastic in any Outdoor Vent Cover No Lint Collecting Screen White
no-pest vent$16.414.4★1,698 rev
Hon&Guan Soffit Vent 4 Inch with Built-in Fly Screen White 1 Pack
Hon&Guan$9.534.6★2,185 rev
Hydencamm 4 Metal Dryer Vent Cover for Exterior Wall Stainless Steel
Hydencamm$19.694.6★816 rev
Newest
by launch date
4 Inch Dryer Vent Cover Outside Stainless Steel Exterior Vent Cover - Weatherproof Rustproof High Temp Resistant for House Wall Range Hood & AC Opening Diameter: 3.8 (Silvery)
EOEDEPAZ$17.0670 rev
Houseluxe Dryer Vent Cover Outside 4 inch Magnetic Door Design Durable Airflow Vent with Lint Trap Screen Thickened Material 6 inch x 6 inch Size White
Houseluxe$12.28345 rev
4 Dryer Vent Cover with Screen Plastic Dryer Vent Hood for Exterior Wall
HOXHA$6.27254 rev
Hon&Guan Soffit Vent 4 Inch with Built-in Fly Screen for Home Black 1 Pack
Hon&Guan$10.062,185 rev
4-Pack Dryer Vent Cover Replacement with Enhanced Rippled Design - Premium Plastic Polymer Dryer Exhaust Vent Cover Replacements Weather Resistant Exterior Dryer Vent Flap Replacement (White)
Rolitwils$10.20154 rev
Trending
90-day click momentum
Deflecto Bird Guard Outdoor Vent Cover Fits 3-4 Inch Vent Hoods Black
Deflecto$10.154.5★
FRESH SPEED 4 Inch Black Dryer Vent Cover Outside Stainless Steel Wall Vent with Removable Cover and Insect Screen Mesh RAL9011
FRESH SPEED$29.584.5★
Houseluxe Dryer Vent Cover Outside 4 inch Magnetic Door Design Durable Airflow Vent with Lint Trap Screen Thickened Material 6 inch x 6 inch Size White
Houseluxe$12.284.6★
4 Inch Dryer Vent Cover Outside Stainless Steel Exterior Vent Cover - Weatherproof Rustproof High Temp Resistant for House Wall Range Hood & AC Opening Diameter: 3.8 (Silvery)
EOEDEPAZ$17.064.6★
2pcs Attic Vent Soffit Vent Aluminum Wall Vent Metal Shed Vent Square Vent Louver Vent Grille with Built-in Insect Screen for Exterior Door House Attic Garage Ceiling (Black 6 x 6-2 Pack)
TVKJHG$12.844.5★
What buyers say about 4 inch vent cover
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent fit”
“the quality is consistent throughout”
“Exactly as pictured”
“Great value”
“Excellent design”
“Easy install”
“Pros: Durable material”
“Solid Construction”
“Easy”
“Also removes easily for cleaning”
What buyers complain about
“Too small”
“Bad Quality”
“It gets clogged”
“Need to install however not pleased no screws sent”
“Kind of cheap made”
“both became brittle”
“The screen fell off with first use”
“is really hard to clean lint out of”
“The included screws weren't long enough for our particular mount”
“False advertising”
Top return reasons
Common questions
- Is 4 inch vent cover profitable to sell on Amazon United States?
- The niche generates $114K/yr across 41 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +15.6%. Flapen's verdict: Worth a look (52/100).
- How competitive is the 4 inch vent cover niche?
- 28 brands and 70 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 62% of demand.
- What do buyers complain about in 4 inch vent cover?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Jamming/Clogging. The return rate is 4.1%.
- When does demand for 4 inch vent cover peak?
- Demand peaks in Jun–Nov; the busiest month runs 2.0× the quietest.
- What does it cost to enter the 4 inch vent cover niche?
- Listings span $6.18–$42.43; the average listing price is $15.14 (sweet spot $15–$100). The average incumbent carries 1,931 reviews — the moat a new listing must climb.