transom window
Skip itWeak search conversion (0.9%) — this niche doesn't clear our bar today.
Review moat
Great165.64avg incumbent reviews — the moat a new listing must climb
Competition
Great34%top-5 click share — an open shelf
Avg price
Good$109.07avg listing price — sweet spot $15–$100
Brand share
Okay77%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Price range
Okay$45.39–$216.05cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-1.3%90-day search growth — must beat 0% to launch
Returns
Bad7.8%return rate — above 5% kills the launch gate
Market size
Bad$50K$50K/yr · 52K searches
Conversion
Bad0.9%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, transom window is a $50K/yr Amazon United States market (52K searches/yr). The top 5 brands hold 77% of demand. Verdict: Skip it — 39/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
transom window market data
- Units sold / yr
- 500–750
- avg 0–100/product
- Revenue / yr
- $55K–$82K
- units × avg price
- Conversion rate
- 0.9%
- Avg BSR
- #54
- Page quality
- 0%
- Prime
- 98%
- Sponsored
- 84%
- Out of stock
- 16.3%
- Avg brand age
- 38 months
- Avg seller age
- 212 days
Competition & brand share
Clicks spread well past the top 5 (34% combined) — an open shelf where new products get seen.Brands
20 rising
Sellers
43
Top-5 brand share
77%
Top 20: 100%
Top-5 click share
34%
Top 20: 71%
Open market
20%
- COLORPAPA28%
- NOTASA21%
- NeatiEase10%
- Melkus9%
- OTIIALOT9%
- WRISIN3%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -1.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top transom window search terms
- transom window32K/yr
- transom windows10K/yr
- 12x36 window4K/yr
- fixed window3K/yr
- shed transom window3K/yr
Top transom window 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
NOTASA Vinyl Transom Household Fixed Window 10 x 36 White
NOTASA$105.994.5★43 rev
COLORPAPA 10 x 48 Vinyl Transom Window White
COLORPAPA$128.214.6★15 rev
COLORPAPA 2 Pack Shed Windows 10x35 Transom Window Fixed Design with Tempered Glass for Shed Chicken Coop Playhouse Household Garage Barns (White)
COLORPAPA$109.614.7★91 rev
NOTASA Shed Windows 2 Pack Fixed Transom Windows 10 x 35 Black
NOTASA$110.444.6★200 rev
NeatiEase 2 Pack Shed Windows 10x35 Transom Window Fixed Design with Tempered Glass for Playhouses Sheds Garage and Chicken Coops (Black)
NeatiEase$90.674.5★87 rev
Newest
by launch date
Teodute 2 Pack Shed Windows 10x35 Fixed Transom Window with Tempered Glass Flush Mount Utility Window for Chicken Coop Garage Barn Playhouse and Greenhouse White
Teodute$104.828 rev
12 x 36 Vinyl Transom Window Low-E Glass with Argon Gas Double-Pane Insulated Tempered Clear Glass Household Fixed Picture Window (White)
OTIIALOT$143.930 rev
Vinyl Transom Window 12 x 48 Double Pane Household Fixed Window and Tempered Glass for House Picture Window (White)
OTIIALOT$156.000 rev
12 x 30 Vinyl Transom Window Low-E Glass with Argon Gas Double-Pane Insulated Tempered Clear Glass Household Fixed Picture Window
OTIIALOT$113.750 rev
Melkus Shed Windows 10x29 2 Pack Upgraded Sliding Transom Window with Tempered Glass and Screen for Shed Chicken Coop Barn Greenhouse Garage Playhouse Storage Room White
Melkus$99.368 rev
Trending
90-day click momentumVinyl Transom Window 12 x 48 Double Pane Household Fixed Window and Tempered Glass for House Picture Window (White)
OTIIALOT$156.000.0★
12 x 36 Vinyl Transom Window Low-E Glass with Argon Gas Double-Pane Insulated Tempered Clear Glass Household Fixed Picture Window (White)
OTIIALOT$143.930.0★
12 x 30 Vinyl Transom Window Low-E Glass with Argon Gas Double-Pane Insulated Tempered Clear Glass Household Fixed Picture Window
OTIIALOT$113.750.0★
Melkus Shed Window 10x23 2 Pack Transom Window Fixed Design with Tempered Glass Perfect for Shed Chicken Coop Barn Greenhouse Garage Playhouse Storage Room White
Melkus$70.824.7★
Teodute 2 Pack Shed Windows 10x35 Fixed Transom Window with Tempered Glass Flush Mount Utility Window for Chicken Coop Garage Barn Playhouse and Greenhouse White
Teodute$104.824.0★
What buyers say about transom window
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality”
“The size is an accurate fit”
“Great value for the money”
“no problems with install”
“Powerful and quiet”
“seem to be very well made”
“Works as advertised”
“Sturdy Shed Windows That Let in Light”
“they were easy enough to remove”
“well made vinyl materials”
What buyers complain about
“Ok, not great. esp for the price”
“Poor quality”
“it does not work correctly”
“it's loud”
“Small in size”
“Beware of the weather resistant case advertised”
“There is no cooling at all because it has almost zero power”
“Fram A little flimsy”
“The reliance on foam blocks makes the design feel poorly thought out”
“Missing remote”
Top return reasons
Common questions
- Is transom window profitable to sell on Amazon United States?
- The niche generates $50K/yr across 56 tracked products. 17 of 37 products launched in the last 360 days are still selling. 90-day search growth is -1.3%. Flapen's verdict: Skip it (39/100).
- How competitive is the transom window niche?
- 20 brands and 43 sellers compete. The top 5 products take 34% of clicks and top 5 brands hold 77% of demand.
- What do buyers complain about in transom window?
- Top complaints mined from reviews: Value For Money, Quality-Overall, Functionality-Overall. The return rate is 7.8% — above our launch gate.
- When does demand for transom window peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the transom window niche?
- Listings span $45.39–$216.05; the average listing price is $109.07 (sweet spot $15–$100). The average incumbent carries 166 reviews — the moat a new listing must climb.