---
title: "21x28 Frame — $67K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/21x28-frame"
last_updated: "2026-08-09T06:08:28.476Z"
locale: en
meta:
description: "Niche score 43/100 · $67K/yr market · 38K searches/yr · $33.99 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:description": "Niche score 43/100 · $67K/yr market · 38K searches/yr · $33.99 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:title": "21x28 Frame — $67K/yr Amazon US Niche (2026) - Flapen"
---
# **21x28 frame**
**Skip it**
A small market ($67K/yr) — this niche doesn't clear our bar today.
Market size 17Growth 24Conversion 60Competition 28Returns 60Price range 95Avg price 95Brand share 42Review moat 25Quality gap 60
**Avg price**
**Incredible****$33.99**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$25.93–$54.52**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****5.2%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Returns**
**Good****2.6%**
return rate — above 5% kills the launch gate
**Brand share**
**Okay****80%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****68%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****4,888.63**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-2.5%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$67K**
$67K/yr · 38K searches
According to Flapen's Amazon United States niche tracking, 21x28 frame is a $67K/yr Amazon United States market (38K searches/yr). The top 5 brands hold 80% of demand. Demand peaks in Jul. Verdict: Skip it — 43/100.
Data updated Aug 2, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **21x28 frame market data**
- **Units sold / yr**
- **3K–3K**
- avg 100–250/product
- **Revenue / yr**
- **$85K–$102K**
- units × avg price
- **Conversion rate**
- **5.2%**
- **Avg BSR**
- **#301**
- **Page quality**
- **0%**
- **Prime**
- **88%**
- **Sponsored**
- **75%**
- **Out of stock**
- **5.5%**
- **Avg brand age**
- **39 months**
- **Avg seller age**
- **211 days**
## **Competition & brand share**
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▲rising
**Sellers**
**15**
**Top-5 brand share**
**80%**
Top 20: 100%
**Top-5 click share**
**68%**
Top 20: 100%
**Open market**
**16%**
- A PLUS MAX24% - JCJMY21% - LaVie Home21% - Americanflat9% - NAOKBOEE6% - Fxojyvo4% - Open — no brand owns it (6 brands, 16%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -2.5% search growth over the last 90 days.
800600Spike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jul · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/21x28-frame/trend)
## **Top 21x28 frame search terms**
- **21x28 frame**16K/yr+11.7%4.5% conv. - **21 x 28 frame**6K/yr-0.8%5.2% conv. - **21x28 poster frame**5K/yr-3.3%6.5% conv. - **28x21 frame**5K/yr-4.0%5.4% conv. - **28x21 puzzle frame**3K/yr-27.5%7.9% conv. - **21x28 picture frame**3K/yr-38.3%5.7% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/21x28-frame/search-terms)
## **Top 21x28 frame 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%10%$7K20%$13K30%$20K40%$27K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 16 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**A PLUS MAX 21x28 Picture Frame Black Light Weight Wall Mount**A PLUS MAX**$26.66**4.3★5,940 rev](https://www.amazon.com/dp/B0DPHFYJXG) [2**LaVie Home 21x28 Picture Frame for Wall Display 21x28 Black Picture Frame with HD Plexiglas 21 x 28 Poster Frame 1 Pack Display Frame for Vertical or Horizontal Classic Collection**LaVie Home**$28.18**4.4★6,741 rev](https://www.amazon.com/dp/B0D4LV6GP7) [3**JCJMY 21x28 Picture Frame with 18x24 Mat Display Photo 18x24 with Mat or 21 x 28 Without Mat Wall Hanging Large 21 by 28 Poster Frame with Plexiglass Black**JCJMY**$28.11**4.6★2,138 rev](https://www.amazon.com/dp/B0FT858XPJ) [4**Americanflat 21x28 Poster Frame - Engineered Wood - Black**Americanflat**$34.65**4.5★41,054 rev](https://www.amazon.com/dp/B0CMC96D2J) [5**NAOKBOEE 21x28 Picture Frame in Black Photo Frames with Plexiglass Horizontal and Vertical Formats for Wall Mounting**NAOKBOEE**$25.93**4.5★1,179 rev](https://www.amazon.com/dp/B0FSRFW5GF)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**A PLUS MAX 21x28 Picture Frame Brown Light Weight Wall Mount**A PLUS MAX**$29.76**5,940 rev3mo ago](https://www.amazon.com/dp/B0GXVRCDC8) [**GULETHUN 21x28 Frame Transitional Modern Design Picture Frames 21 by 28 Rustic Poster Frame for Home Decor Gold Vintage Photo Frame Horizontal or Vertical Display Choose Size & Color**GULETHUN**$54.52**11 rev5mo ago](https://www.amazon.com/dp/B0GFWDX8CJ) [**HUKONHEP 21x28 Black Picture Frames Photos Frame with Plexiglass Wall Gallery Photo Frames Horizontal and Vertical for Wall Mounting Home Office Decoration**HUKONHEP**$27.91**2,338 rev7mo ago](https://www.amazon.com/dp/B0GCDB57KD) [**JCJMY 21x28 Picture Frame with 18x24 Mat Display Photo 18x24 with Mat or 21 x 28 Without Mat Wall Hanging Large 21 by 28 Poster Frame with Plexiglass Black**JCJMY**$28.11**2,138 rev10mo ago](https://www.amazon.com/dp/B0FT858XPJ) [**JCJMY 21x28 Picture Frame with 18x24 Mat Display Photo 18x24 with Mat or 21 x 28 Without Mat Wall Hanging Large 21 by 28 Poster Frame with Plexiglass Gold**JCJMY**$31.17**2,138 rev10mo ago](https://www.amazon.com/dp/B0FT85388K)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**NAOKBOEE 21x28 Picture Frame in Black Photo Frames with Plexiglass Horizontal and Vertical Formats for Wall Mounting**NAOKBOEE**$25.93**4.5★**▲ 249%**](https://www.amazon.com/dp/B0FSRFW5GF) [**A PLUS MAX 21x28 Picture Frame Brown Light Weight Wall Mount**A PLUS MAX**$29.76**4.3★**▲ 246%**](https://www.amazon.com/dp/B0GXVRCDC8) [**JCJMY 21x28 Picture Frame with 18x24 Mat Display Photo 18x24 with Mat or 21 x 28 Without Mat Wall Hanging Large 21 by 28 Poster Frame with Plexiglass Gold**JCJMY**$31.17**4.6★**▲ 93%**](https://www.amazon.com/dp/B0FT85388K) [**GULETHUN 21x28 Frame Transitional Modern Design Picture Frames 21 by 28 Rustic Poster Frame for Home Decor Gold Vintage Photo Frame Horizontal or Vertical Display Choose Size & Color**GULETHUN**$54.52**3.3★**▲ 89%**](https://www.amazon.com/dp/B0GFWDX8CJ) [**JCJMY 21x28 Picture Frame with 18x24 Mat Display Photo 18x24 with Mat or 21 x 28 Without Mat Wall Hanging Large 21 by 28 Poster Frame with Plexiglass Black**JCJMY**$28.11**4.6★**▲ 57%**](https://www.amazon.com/dp/B0FT858XPJ)
**~~View all trending →~~**
## **What buyers say about 21x28 frame**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Frame Quality**38%
*“Good frame”*
**Value For Money**17%
*“Pretty good for price”*
**Quality-Overall**11%
*“Great quality”*
**Size-Overall**6%
*“Perfect fit”*
**Advertised Vs Actual Product**4%
*“Exactly what I needed”*
**Efficiency**4%
*“It does the job”*
**Assembly/Installation**1%
*“Installation was simple”*
**Strength**1%
*“The frame feels sturdy”*
**Locking Mechanism**1%
*“The backing opens easily”*
**Security**1%
*“One thing I really like is that the plexiglass is shatter-resistant, which is great if you have kids, pets, or just want something safer than glass”*
### **What buyers complain about **
**Frame Quality**23%
*“My puzzle pieces are bowing inside of the frame”*
**Quality-Overall**21%
*“Too expressive for cheap quality”*
**Durability**10%
*“Broke like a pretzel”*
**Thickness**6%
*“It is much thinner than we expected”*
**Strength**6%
*“its fragile and definitely not worth the money”*
**Size-Overall**6%
*“Dimensions are off”*
**Value For Money**6%
*“for the price it feels cheap”*
### **Top return reasons **
**Frame Quality**56%
**Size-Overall**23%
**Advertised Vs Actual Product**3%
**Defective Material/Parts**3%
**Quality-Overall**3%
**Value For Money**2%
**Color**2%
**Material Quality**1%
**Functionality-Overall**1%
**Product Condition**1%
## **Common questions**
- **Is 21x28 frame profitable to sell on Amazon United States?**
- The niche generates $67K/yr across 16 tracked products. 0 of 9 products launched in the last 360 days are still selling. 90-day search growth is -2.5%. Flapen's verdict: Skip it (43/100).
- **How competitive is the 21x28 frame niche?**
- 12 brands and 15 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 80% of demand.
- **What do buyers complain about in 21x28 frame?**
- Top complaints mined from reviews: Frame Quality, Quality-Overall, Durability. The return rate is 2.6%.
- **When does demand for 21x28 frame peak?**
- Demand peaks in Jul; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the 21x28 frame niche?**
- Listings span $25.93–$54.52; the average listing price is $33.99 (sweet spot $15–$100). The average incumbent carries 4,889 reviews — the moat a new listing must climb.
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