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51

20x20x1 air filter merv 11

Worth a look

Shows searches that convert (12.9% search→purchase), but brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list.

Market size 46Growth 59Conversion 96Competition 17Returns 96Price range 95Avg price 95Brand share 9Review moat 19Quality gap 20

Conversion

Incredible12.9%

search→purchase rate — share of searches ending in a sale

Returns

Incredible0.9%

return rate — above 5% kills the launch gate

Avg price

Incredible$37.55

avg listing price — sweet spot $15–$100

Price range

Incredible$24.96–$48.31

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Good+33.7%

90-day search growth — must beat 0% to launch

Market size

Okay$249K

$249K/yr · 52K searches

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Review moat

Bad15,959.67

avg incumbent reviews — the moat a new listing must climb

Competition

Bad80%

top-5 click share — a locked-up shelf

Brand share

Bad96%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, 20x20x1 air filter merv 11 is a $249K/yr Amazon United States market (52K searches/yr). The top 5 brands hold 96% of demand. Demand peaks in Jun–Jul. Verdict: Worth a look — 51/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

20x20x1 air filter merv 11 market data

Units sold / yr
6K–8K
avg 500–750/product
Revenue / yr
$225K–$300K
units × avg price
Conversion rate
12.9%
Avg BSR
#30
Page quality
0%
Prime
78%
Sponsored
100%
Out of stock
0.0%
Avg brand age
61 months
Avg seller age
185 days

Competition & brand share

The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.

Brands

6 falling

Sellers

31

Top-5 brand share

96%

Top 20: 100%

Top-5 click share

80%

Top 20: 100%

Open market

0%

  • Amazon Basics42%
  • Filtrete19%
  • Filterbuy13%
  • BNX12%
  • Simply11%
  • Aerostar4%
  • Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 103 weeks — +33.7% search growth over the last 90 days.
2K1KHoliday '24Spike '25Prime Day '25Black Friday '25Spike '26DecMarJunAugNovMarMay

Peak months: Jun, Jul · busiest ÷ quietest = 2.1×

Top 20x20x1 air filter merv 11 search terms

  • merv 11 20x20x122K/yr
  • 20x20x1 air filter merv 1122K/yr
  • air filter 20x20x1 merv 114K/yr
  • 20x20x1 merv 114K/yr
All search terms

Top 20x20x1 air filter merv 11 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.

0%15%$37K30%$75K45%$112K60%$150K1001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 9 tracked products in this niche — three views at once, no toggling.

What buyers say about 20x20x1 air filter merv 11

What buyers praise and complain about, mined from review topics.

What buyers love

Filtration26%

“Good filter”

Value For Money20%

“Best price”

Quality-Overall17%

“these are higher quality higher”

Size-Overall13%

“Fit great”

Advertised Vs Actual Product6%

“Work as advertised”

Efficiency3%

“Works Great”

Assembly/Installation2%

“Very easy to install”

Strength2%

“Well made and seems more sturdy than some brand name filters I have previously purchased”

Durability2%

“Functional and durable”

Ease Of Use1%

“I also appreciate the convenience”

What buyers complain about

Filtration27%

“Not a good filter”

Size-Overall17%

“Does not fit”

Quality-Overall15%

“Very flimsy, terrible quality”

Value For Money6%

“too pricey”

Strength6%

“Very flimsy”

Noise Level3%

“Noisy fit is too small”

Material Quality2%

“Cheap material”

Leak-Proof2%

“Air leak before one month”

Assembly/Installation1%

“I went through two trying to install them”

Design-Overall1%

“the mechanical design and stability is crap”

Top return reasons

Size-Overall77%
Filtration12%
Compatibility-Overall4%
Value For Money2%
Quality-Overall1%
Functionality-Overall1%
Material Quality1%
Advertised Vs Actual Product1%
Defective Material/Parts1%
Certifications0%

Common questions

Is 20x20x1 air filter merv 11 profitable to sell on Amazon United States?
The niche generates $249K/yr across 9 tracked products. 90-day search growth is +33.7%. Flapen's verdict: Worth a look (51/100).
How competitive is the 20x20x1 air filter merv 11 niche?
6 brands and 31 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 96% of demand.
What do buyers complain about in 20x20x1 air filter merv 11?
Top complaints mined from reviews: Filtration, Size-Overall, Quality-Overall. The return rate is 0.9%.
When does demand for 20x20x1 air filter merv 11 peak?
Demand peaks in Jun–Jul; the busiest month runs 2.1× the quietest.
What does it cost to enter the 20x20x1 air filter merv 11 niche?
Listings span $24.96–$48.31; the average listing price is $37.55 (sweet spot $15–$100). The average incumbent carries 15,960 reviews — the moat a new listing must climb.