---
title: "Door Jammer — £53K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/baby-products/door-jammer"
last_updated: "2026-08-06T02:07:56.756Z"
locale: en
meta:
description: "Niche score 48/100 · £53K/yr market · 178K searches/yr · £13.20 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 48/100 · £53K/yr market · 178K searches/yr · £13.20 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Door Jammer — £53K/yr Amazon UK Niche (2026) - Flapen"
---
# **door jammer**
**Skip it**
Soft demand (-35.3% this quarter) — this niche doesn't clear our bar today.
Market size 13Growth 7Conversion 28Competition 62Returns 84Price range 68Avg price 60Brand share 84Review moat 48Quality gap 72
**Brand share**
**Great****51%**
top-5 brand share — no brand owns this niche
**Returns**
**Great****1.6%**
return rate — above 5% kills the launch gate
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****£3.13–£40.29**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****48%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Good****£13.20**
avg listing price — sweet spot $15–$100
**Review moat**
**Okay****1,742.26**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Okay****2.3%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****£53K**
£53K/yr · 178K searches
**Growth**
**Bad****-35.3%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=uk&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United Kingdom niche tracking, door jammer is a £53K/yr Amazon United Kingdom market (178K searches/yr). The top 5 brands hold 51% of demand. Verdict: Skip it — 48/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **door jammer market data**
- **Units sold / yr**
- **4K–5K**
- avg 100–250/product
- **Revenue / yr**
- **£53K–£66K**
- units × avg price
- **Conversion rate**
- **2.3%**
- **Avg BSR**
- **#786**
- **Page quality**
- **0%**
- **Prime**
- **97%**
- **Sponsored**
- **85%**
- **Out of stock**
- **7.0%**
- **Avg brand age**
- **38 months**
- **Avg seller age**
- **173 days**
## **Competition & brand share**
The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**34 **▲rising
**Sellers**
**55**
**Top-5 brand share**
**51%**
Top 20: 85%
**Top-5 click share**
**48%**
Top 20: 80%
**Open market**
**46%**
- AceMining20% - Door-Jammer16% - LUNAVAR8% - Generic4% - Crosize4% - nnOuOnn4%
## **Demand**
Weekly Amazon search volume, last 19 weeks — -35.3% search growth over the last 90 days.
10K6KPrime Day '26Mar '26Mar '26Apr '26May '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/uk/baby-products/door-jammer/trend)
## **Top door jammer search terms**
- **door security**41K/yr-19.7%0.6% conv. - **door jammer**34K/yr-54.6%2.5% conv. - **door security bar**27K/yr-23.9%1.7% conv. - **front door security**14K/yr-27.4%0.8% conv. - **door jammers for inside doors**16K/yr-69.1%2.5% conv. - **door blocker**10K/yr-9.3%1.7% conv. - **door security devices**5K/yr+7.2%1.2% conv. - **door jam**7K/yr+3.3%1.6% conv. - **security door stopper**10K/yr-32.7%2.1% conv. - **hotel door jammer**3K/yr-23.3%3.5% conv. [**All search terms **](https://flapen.com/research/uk/baby-products/door-jammer/search-terms)
## **Top door jammer 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%£3K10%£5K15%£8K20%£11K1101001K10K100K 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**AceMining Upgraded Door Security Bar & Sliding Patio Door Security Bar Heavy Duty Security Door Stoppers Adjustable Door Jammer Security Bar for Home Apartment Travel**AceMining**£19.72**4.6★12,223 rev](https://www.amazon.co.uk/dp/B0BKKTFWJK) [2**DoorJammer Portable Door Lock Brace for Home Security and Personal Protection (DJ3 - DoorJammer (Standard)) Red**Door-Jammer**£19.69**4.4★2,761 rev](https://www.amazon.co.uk/dp/B07HM7X6TT) [3**Door Stop Lock with Alarm Portable Door Lock & Travel Security Stopper Door Jammer for Hotel Airbnb & Home Home Security & Personal Protection (80dB Alert 535mm Gap)**LUNAVAR**£20.09**4.5★56 rev](https://www.amazon.co.uk/dp/B0DJDZV2RT) [4**Home Security Door Lock Upgraded Metal Door Lock for Child Safety 3 Inch Supports 800lbs Impact for Interior Swing Doors Security Door Lock**Crosize**£9.67**4.6★1,937 rev](https://www.amazon.co.uk/dp/B0CD9ZLZHK) [5**Portable Hotel Door Stopper Lock for Travel Safety Door Security 80dB Alarm & Heavy Duty Alloy No Drilling Stopper Dorm Safety Lock Instant Install for Solo Women Girl (red(cr2032battery Include))**nnOuOnn**£16.88**4.9★15 rev](https://www.amazon.co.uk/dp/B0FCBQ65YF)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Portable Security Door Lock Stopper Hotel Door Locks for Floor Doors Stopper for Travelers Security Anti Theft Door Blocker Portable Doors Stoppers Locks for Bottom of Door for Home Apartment**DVDVBOOM**£11.96**3 rev4mo ago](https://www.amazon.co.uk/dp/B0GSVBPRP2) [**Portable Door Lock for Enhanced Security Lightweight & Easy to Install Anti-Theft Travel Lock for Hotels Homes & Dorms**Torveen**£3.13**8 rev11mo ago](https://www.amazon.co.uk/dp/B0FN45VYC2) [**Pindex 1 Internal Door Security Bar Adjustable Sliding Door Brace Bar 1 1-1 4 m for Patio Sliding Apartment Home Hotel Window White**Pindex**£13.23**9 rev11mo ago](https://www.amazon.co.uk/dp/B0FDKYPM6C) [**Portable Hotel Door Stopper Lock for Travel Safety Door Security 80dB Alarm & Heavy Duty Alloy No Drilling Stopper Dorm Safety Lock Instant Install for Solo Women Girl (red(cr2032battery Include))**nnOuOnn**£16.88**15 rev1y ago](https://www.amazon.co.uk/dp/B0FCBQ65YF) [**WENLISELL Adjustable Door Security Bar 50-132cm Removable Sliding Door Security Bar for Home Room Hotel Apartment Travel**WENLISELL**£14.13**6 rev1y ago](https://www.amazon.co.uk/dp/B0F9Y23HB4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Portable Security Door Lock Stopper Hotel Door Locks for Floor Doors Stopper for Travelers Security Anti Theft Door Blocker Portable Doors Stoppers Locks for Bottom of Door for Home Apartment**DVDVBOOM**£11.96**3.4★**▲ 400%**](https://www.amazon.co.uk/dp/B0GSVBPRP2) [**Home Security Door Lock Upgraded Metal Door Lock for Child Safety 3 Inch Supports 800lbs Impact for Interior Swing Doors Security Door Lock**Crosize**£9.67**4.6★**▲ 267%**](https://www.amazon.co.uk/dp/B0CD9ZLZHK) [**Door Stop Alarm & Portable Door Lock - Hotel Door Jammer with 150dB Alert - Adjustable Security Device for Home & Travel Protection - Travel Safety Kit**Generic**£9.84**4.1★**▲ 155%**](https://www.amazon.co.uk/dp/B0CW6D53CJ) [**AceMining Upgraded Door Security Bar & Sliding Patio Door Security Bar Heavy Duty Security Door Stoppers Adjustable Door Jammer Security Bar for Home Apartment Travel**AceMining**£19.60**4.6★**▲ 134%**](https://www.amazon.co.uk/dp/B0BV9YMS3F) [**WENLISELL Adjustable Door Security Bar 50-132cm Removable Sliding Door Security Bar for Home Room Hotel Apartment Travel**WENLISELL**£14.13**4.8★**▲ 119%**](https://www.amazon.co.uk/dp/B0F9Y23HB4)
**~~View all trending →~~**
## **What buyers say about door jammer**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**14%
*“Excellent product”*
**Locking Mechanism**13%
*“Brilliant lock easy to use”*
**Security**13%
*“Feels secure”*
**Ease Of Use**11%
*“Ease of use”*
**Advertised Vs Actual Product**9%
*“As advertised”*
**Strength**8%
*“Strong stand”*
**Size-Overall**8%
*“Fits well”*
**Value For Money**8%
*“Good price”*
**Assembly/Installation**2%
*“Easy to assemble and set up”*
**Grip**2%
*“Definitely none slip”*
### **What buyers complain about **
**Functionality-Overall**15%
*“Didn't work”*
**Locking Mechanism**8%
*“Hard to unlock”*
**Quality-Overall**8%
*“Cheap”*
**Durability**6%
*“Broke really easily”*
**Size-Overall**6%
*“No fitting”*
**Noise Level**5%
*“The 150dB alarm is reassuringly loud”*
**Adhesion/Stickiness**4%
*“Works well does the job good value for money they only thing i found it didnt stay on the door very well needs stronger adhesive”*
**Weight Heavy**3%
*“Heavier than expected”*
**Thickness**3%
*“Only issue is that the thick end of the wedge should be thicker”*
**Grip**3%
*“Slip Resistance - The grip on the underside of the device is insufficient for many slippery floor types”*
### **Top return reasons **
**Size-Overall**38%
**Compatibility-Overall**15%
**Functionality-Overall**13%
**Locking Mechanism**4%
**Defective Material/Parts**3%
**Adhesion/Stickiness**3%
**Mechanism Issues**3%
**Alarm/Timer Accuracy**2%
**Quality-Overall**2%
**Ease Of Use**2%
## **Common questions**
- **Is door jammer profitable to sell on Amazon United Kingdom?**
- The niche generates £53K/yr across 39 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is -35.3%. Flapen's verdict: Skip it (48/100).
- **How competitive is the door jammer niche?**
- 34 brands and 55 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 51% of demand.
- **What do buyers complain about in door jammer?**
- Top complaints mined from reviews: Functionality-Overall, Locking Mechanism, Quality-Overall. The return rate is 1.6%.
- **What does it cost to enter the door jammer niche?**
- Listings span £3.13–£40.29; the average listing price is £13.20 (sweet spot $15–$100). The average incumbent carries 1,742 reviews — the moat a new listing must climb.
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