duck window insulation kit
Worth a lookShows no brand lock-in (top 5 brands take 37% of clicks), but a small market ($48K/yr) keeps it on the watch list.
Brand share
Incredible37%top-5 brand share — no brand owns this niche
Competition
Great25%top-5 click share — an open shelf
Avg price
Great$17.46avg listing price — sweet spot $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Price range
Good$5.66–$130.52cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Okay3.5%return rate — above 5% kills the launch gate
Conversion
Okay2.2%search→purchase rate — share of searches ending in a sale
Growth
Bad-4.4%90-day search growth — must beat 0% to launch
Review moat
Bad9,931.89avg incumbent reviews — the moat a new listing must climb
Market size
Bad$48K$48K/yr · 126K searches
According to Flapen's Amazon United States niche tracking, duck window insulation kit is a $48K/yr Amazon United States market (126K searches/yr). The top 5 brands hold 37% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Worth a look — 51/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
duck window insulation kit market data
- Units sold / yr
- 6K–8K
- avg 100–250/product
- Revenue / yr
- $105K–$140K
- units × avg price
- Conversion rate
- 2.2%
- Avg BSR
- #63
- Page quality
- 0%
- Prime
- 97%
- Sponsored
- 89%
- Out of stock
- 0.9%
- Avg brand age
- 41 months
- Avg seller age
- 137 days
Competition & brand share
Clicks spread well past the top 5 (25% combined) — an open shelf where new products get seen.Brands
49 rising
Sellers
103
Top-5 brand share
37%
Top 20: 82%
Top-5 click share
25%
Top 20: 64%
Open market
58%
- Duck10%
- rabbitgoo9%
- Dwersty7%
- KESPEN WINDOW FILMS6%
- ZUNGOUMC5%
- FONUNO5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -4.4% search growth over the last 90 days.Peak months: Jan, Nov, Dec · busiest ÷ quietest = 12.1×
Top duck window insulation kit search terms
- sunlight blockers for windows16K/yr
- sliding door sun blocker6K/yr
- window heat blocking3K/yr
- home window sun blocker4K/yr
- privavue21K/yr
- sunscreen for windows3K/yr
- silver window film3K/yr
- block sunlight from window5K/yr
- window thermal film7K/yr
- mirror glass film4K/yr
Top duck window insulation kit 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
Upgraded One Way Window Privacy Film Sun Heat Blocking Reflective Mirror Window Tint for Home Glass Windows Cover Static Cling Removable Anti-UV Anti-Glare Black-Silver 17.5 Inch * 78.74 Inch
Dwersty$5.864.4★5,026 rev
Black Out Window Cover Portable Blacout Curtain for Bedroom Blackout Blinds No Drill Cuttable Blackout Shades Adhesive Thermal Portable Temporary Darkening Kitchen Travel Skylight RV Dorm 40x57 inch
ZUNGOUMC$7.214.4★1,512 rev
Reflective Bubble Insulation Sheet Double Side Aluminum Foil Bubble Shield Aluminum Foil Thermal Insulation Radiant Barrier for Windows RV Roof Garage Door (23.6IN X 10FT)
FONUNO$13.864.6★1,980 rev
Duck MAX Strength Window Insulation Kit Winter Window Seal Kit Fits up to 5 Windows Heavy Duty Shrink Film Cuts to Size for Easy Indoor Installation Window Tape Included 62 In. x 210 In. Clear
Duck$19.834.4★3,755 rev
KESPEN Window Privacy Film One Way Daytime Privacy Static Cling Sun Blocking Anti UV Reflective Window Tint for Home and Office Black-Silver 17.5 Inch X 6.5 Feet
KESPEN WINDOW FILMS$6.724.1★30,308 rev
Newest
by launch dateUpgraded One Way Window Privacy Film Sun Heat Blocking Reflective Mirror Window Tint for Home Glass Windows Cover Static Cling Removable Anti-UV Anti-Glare Black-Silver 17.5 Inch * 78.74 Inch
Dwersty$5.865,026 rev
rabbitgoo Window Tint for Home with Tools Black Silver 17.5 x 78.7
rabbitgoo$6.584,195 rev
Black Out Window Cover Portable Blacout Curtain for Bedroom Blackout Blinds No Drill Cuttable Blackout Shades Adhesive Thermal Portable Temporary Darkening Kitchen Travel Skylight RV Dorm 40x57 inch
ZUNGOUMC$7.211,512 rev
Dwersty One Way Daytime Window Privacy Film See Out Not in Window Tint for Home Reflective Mirror Glass Windows Coverings Sun Heat UV Blocking Black-Silver 17.5 X 78.7
Dwersty$5.871,908 rev
Adhesive Blackout Curtains- Self Stick Shades Window Blinds Curtains No Rod Needed Easy to Hang Curtains Use for Bedroom Living Room Dining Room Kitchen Home Office 35W X 59L Black 1 Panel
Sovtfides$10.711,053 rev
Trending
90-day click momentumUpgraded One Way Window Privacy Film Sun Heat Blocking Reflective Mirror Window Tint for Home Glass Windows Cover Static Cling Removable Anti-UV Anti-Glare Black-Silver 17.5 Inch * 78.74 Inch
Dwersty$5.864.4★
rabbitgoo Window Tint for Home with Tools Black Silver 17.5 x 78.7
rabbitgoo$6.584.4★
Heat Control Window Film with Tools Window Tint Sun Blocking Blackout and UV Protection one-Way Privacy Mirror Reflective Film Explosion-Proof Premium PET Material Cosmic Black 17.5 Inch x 6.5 Feet
xiawei$8.524.1★
Thickened Wide Magnetic Thermal Insulated Door Curtain Thicken Polyester Fiberfill & Thicker Oxford Fabric Temporary Screen Curtains Magnetic Closure for French/Sliding Door Fit Doors to 72x80
Odocovo$40.774.6★
AGHITG Reflective Insulation Foam 48 x 10 Ft Window Insulation for Summer Heat Aluminum Foil Bubble Insulation Roll for Keep Heat Window Insulation Kit for RV Thermal Insulation Cover for Window.
AGHITG$26.024.4★
What buyers say about duck window insulation kit
What buyers praise and complain about, mined from review topics.What buyers love
“Ease of installation”
“Good product and tools”
“Ease of use”
“Better than I expected”
“Excellent value for money”
“Works very effectively”
“Works well for privacy”
“The material feels durable”
“easy to fit”
“Easy to stick”
What buyers complain about
“Bad adhesive”
“Did not work”
“Quality is cheaper than years past”
“Hard to put on”
“Frustrating to install”
“NOT PRIVACY”
“not super thick”
“FALSE ADVERTISEMENT”
“To small”
“Didnt last”
Top return reasons
Common questions
- Is duck window insulation kit profitable to sell on Amazon United States?
- The niche generates $48K/yr across 75 tracked products. 5 of 7 products launched in the last 360 days are still selling. 90-day search growth is -4.4%. Flapen's verdict: Worth a look (51/100).
- How competitive is the duck window insulation kit niche?
- 49 brands and 103 sellers compete. The top 5 products take 25% of clicks and top 5 brands hold 37% of demand.
- What do buyers complain about in duck window insulation kit?
- Top complaints mined from reviews: Adhesion/Stickiness, Functionality-Overall, Quality-Overall. The return rate is 3.5%.
- When does demand for duck window insulation kit peak?
- Demand peaks in Jan–Nov–Dec; the busiest month runs 12.1× the quietest.
- What does it cost to enter the duck window insulation kit niche?
- Listings span $5.66–$130.52; the average listing price is $17.46 (sweet spot $15–$100). The average incumbent carries 9,932 reviews — the moat a new listing must climb.