---
title: "Plastic Shims — $228K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/plastic-shims"
last_updated: "2026-08-07T11:29:02.260Z"
locale: en
meta:
description: "Niche score 59/100 · $228K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 59/100 · $228K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Plastic Shims — $228K/yr Amazon US Niche (2026) - Flapen"
---
# **plastic shims**
**Worth a look**
Shows searches that convert (10.6% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 43Growth 58Conversion 89Competition 59Returns 78Price range 53Avg price 62Brand share 62Review moat 63Quality gap 32
**Conversion**
**Great****10.6%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.8%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****978.88**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Good****68%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Good****$13.38**
avg listing price — sweet spot $15–$100
**Competition**
**Good****50%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Good****+32.1%**
90-day search growth — must beat 0% to launch
**Price range**
**Good****$4.70–$26.55**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Okay****$228K**
$228K/yr · 161K searches
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, plastic shims is a $228K/yr Amazon United States market (161K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in May–Jun. Verdict: Worth a look — 59/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **plastic shims market data**
- **Units sold / yr**
- **15K–20K**
- avg 500–750/product
- **Revenue / yr**
- **$201K–$268K**
- units × avg price
- **Conversion rate**
- **10.6%**
- **Avg BSR**
- **#577**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **96%**
- **Out of stock**
- **0.8%**
- **Avg brand age**
- **37 months**
- **Avg seller age**
- **179 days**
## **Competition & brand share**
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▼falling
**Sellers**
**18**
**Top-5 brand share**
**68%**
Top 20: 100%
**Top-5 click share**
**50%**
Top 20: 94%
**Open market**
**25%**
- Stock Your Home26% - WOBBLE WEDGES14% - PROPA11% - ZZJMCH10% - VOCOMO7% - Glazelock7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +32.1% search growth over the last 90 days.
4K3KSpike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/plastic-shims/trend)
## **Top plastic shims search terms**
- **plastic shims**81K/yr+27.4%7.7% conv. - **plastic shims for leveling**29K/yr+13.4%9.7% conv. - **plastic wedges shims**14K/yr+14.1%5.9% conv. - **plastic shims for leveling outdoor**5K/yr+585.7%7.7% conv. - **plastic shim**10K/yr+16.7%5.8% conv. - **shims for leveling outdoor**4K/yr+506.4%7.5% conv. - **window shims**6K/yr+21.9%1.4% conv. - **masonry shims**3K/yr+78.2%2.1% conv. - **plastic door shims**3K/yr+4.7%4.4% conv. - **heavy duty shims**3K/yr+44.1%4.2% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/plastic-shims/search-terms)
## **Top plastic shims 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%5%$11K10%$23K15%$34K20%$46K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Composite Shims (24 Pack) - Hard Composite Shims for Home Improvement - Never Rot for Leveling - Restaurant Table Levelers - Table Wedges - Toilet Levelers - DIY Furniture Levelers - Stock Your Home**Stock Your Home**$12.72**4.7★1,386 rev](https://www.amazon.com/dp/B09K9GYRHK) [2**ZZJMCH 12 Pack White Multi Purpose Furniture Plastic Shims for Leveling Extreme Weight Capacity Wedges Easy to Snap Cut-to-fit Size Leveler for Toilet Shims Doors Windows Sheds Table**ZZJMCH**$5.62**4.4★642 rev](https://www.amazon.com/dp/B09M2XKGGL) [3**Flexible Plastic Shims 12pcs Kit Size Variety | Clear Leveling Kit for Home Improvement | Furniture Leg Stabilizers | Table & Toilet Shims - Trim-to-Fit Wedges | Stackable Design | Furniture Levelers**PROPA**$8.97**4.6★288 rev](https://www.amazon.com/dp/B0FDQXBJ28) [4**Glazelock Prescored Plastic Shims for Leveling (12 Pack) 7-3/8-Inch Length - Professional Quick-Snap Scored Wedges to Level Doors Toilet Shims Windows Cabinets Indoor Outdoor Use - Made in USA**Glazelock**$12.89**4.8★77 rev](https://www.amazon.com/dp/B0DFF3XVS7) [5**Furniture Levelers Flexible Plastic Shims Furniture Leveling Wedge Shims Anti-Wobble Pad for Chair Table Couch Bed Toilet for Home Improvement (Black 20 Pack)**VOCOMO**$9.84**4.4★197 rev](https://www.amazon.com/dp/B0F9DJWMH4)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**12 Pcs Heavy Duty Plastic Shims for Leveling - Slotted Furniture Wedges for Toilet Windows and Doors Stackable Table Levelers with Anti-Slip Texture Snap-to-Fit Size White**CITLOW**$4.70**45 rev6mo ago](https://www.amazon.com/dp/B0GK17BXYV) [**Clear Heavy-Duty Plastic Shims Professional Leveling Wedges for Wobbly Toilets Furniture Washers & Commercial Equipment Trim-to-Fit Stackable Non-Slip Floor Protection(Clear 4 Pack)**Generic**$6.11**80 rev10mo ago](https://www.amazon.com/dp/B0FRN3P336) [**IANFAN 200 Pack Solid Plastic Shims for Leveling Heavy Duty Composite Shims and Wedges for Furniture Leveling Anti-Skid Leveling Shims for Furniture Table Refrigerators Cabinets Beds (Black)**IANFAN**$19.86**3 rev10mo ago](https://www.amazon.com/dp/B0FR5CGYDQ) [**Flexible Plastic Shims 12pcs Kit Size Variety | Clear Leveling Kit for Home Improvement | Furniture Leg Stabilizers | Table & Toilet Shims - Trim-to-Fit Wedges | Stackable Design | Furniture Levelers**PROPA**$8.97**288 rev1y ago](https://www.amazon.com/dp/B0FDQXBJ28) [**Furniture Levelers Flexible Plastic Shims Furniture Leveling Wedge Shims Anti-Wobble Pad for Chair Table Couch Bed Toilet for Home Improvement (Black 20 Pack)**VOCOMO**$9.84**197 rev1y ago](https://www.amazon.com/dp/B0F9DJWMH4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Wobble Wedges Rigid Plastic Shims 75 Pack - Made in USA - Multi-Purpose Shim Wedges for Home Improvement & Work - Plastic Wedge for Table Toilet Furniture Levelers & Leveling Feet - Black**WOBBLE WEDGES**$26.55**4.6★**▲ 142%**](https://www.amazon.com/dp/B00435B9FS) [**12 Pcs Heavy Duty Plastic Shims for Leveling - Slotted Furniture Wedges for Toilet Windows and Doors Stackable Table Levelers with Anti-Slip Texture Snap-to-Fit Size White**CITLOW**$4.70**4.4★**▲ 113%**](https://www.amazon.com/dp/B0GK17BXYV) [**Wobble Wedges Rigid Plastic Shims Multi-Purpose Shim Wedges for Home Improvement & Work - Plastic Wedge for Table Toilet Furniture Levelers & Leveling Feet Made in USA Black 30Pack**WOBBLE WEDGES**$14.58**4.6★**▲ 106%**](https://www.amazon.com/dp/B01H99I9CA) [**Composite Shims (72 Pack) - Hard Composite Shims for Home Improvement - Never Rot for Leveling - Restaurant Table Levelers - Table Wedges - Toilet Levelers - DIY Furniture Levelers**Stock Your Home**$25.46**4.7★**▲ 62%**](https://www.amazon.com/dp/B0D9MJNVTH) [**Clear Heavy-Duty Plastic Shims Professional Leveling Wedges for Wobbly Toilets Furniture Washers & Commercial Equipment Trim-to-Fit Stackable Non-Slip Floor Protection(Clear 4 Pack)**Generic**$6.11**4.3★**▲ 62%**](https://www.amazon.com/dp/B0FRN3P336)
**~~View all trending →~~**
## **What buyers say about plastic shims**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Ease Of Use**16%
*“Easy to use”*
**Advertised Vs Actual Product**16%
*“Just what I needed”*
**Quality-Overall**12%
*“Build quality is consistent”*
**Efficiency**10%
*“Worked well for my purpose”*
**Size-Overall**6%
*“Perfect fit”*
**Value For Money**5%
*“Good value”*
**Durability**4%
*“easy to break off if you want to”*
**Strength**4%
*“Good and sturdy”*
**Color**3%
*“The clear color makes them appealing to”*
**Material Quality**3%
*“Very strong composite material that you hammer in”*
### **What buyers complain about **
**Size-Overall**35%
*“Too small”*
**Strength**8%
*“Not as strong as they say”*
**Flexibility**7%
*“they tend to bend over time”*
**Thickness**7%
*“they are thin”*
**Material Quality**5%
*“The plastic / rubber material is very dense”*
**Weight Heavy**3%
*“not heavy duty not toilets”*
**Ease Of Use**3%
*“Not easy to cut”*
**Advertised Vs Actual Product**2%
*“they were incorrectly described”*
**Quality-Overall**1%
*“Not the quality that I had hoped for”*
**Defective Material/Parts**1%
*“Pieces broke off when I hit into place I wasnt doing it all hard either”*
### **Top return reasons **
**Size-Overall**51%
**Advertised Vs Actual Product**9%
**Functionality-Overall**8%
**Thin**6%
**Value For Money**5%
**Thickness**3%
**Material Quality**3%
**Strength**2%
**Defective Material/Parts**2%
**Compatibility-Overall**2%
## **Common questions**
- **Is plastic shims profitable to sell on Amazon United States?**
- The niche generates $228K/yr across 24 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +32.1%. Flapen's verdict: Worth a look (59/100).
- **How competitive is the plastic shims niche?**
- 16 brands and 18 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 68% of demand.
- **What do buyers complain about in plastic shims?**
- Top complaints mined from reviews: Size-Overall, Strength, Flexibility. The return rate is 1.8%.
- **When does demand for plastic shims peak?**
- Demand peaks in May–Jun; the busiest month runs 1.8× the quietest.
- **What does it cost to enter the plastic shims niche?**
- Listings span $4.70–$26.55; the average listing price is $13.38 (sweet spot $15–$100). The average incumbent carries 979 reviews — the moat a new listing must climb.
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