---
title: "Letter Box Draft Excluder Internal — £39K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/letter-box-draft-excluder-internal"
last_updated: "2026-07-31T11:48:00.253Z"
locale: en
meta:
description: "Niche score 35/100 · £39K/yr market · 93K searches/yr · £8.72 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 35/100 · £39K/yr market · 93K searches/yr · £8.72 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Letter Box Draft Excluder Internal — £39K/yr Amazon UK Niche (2026) - Flapen"
---
# **letter box draft excluder internal**
**Skip it**
Soft demand (-64.7% this quarter) — this niche doesn't clear our bar today.
Market size 10Growth 0Conversion 57Competition 56Returns 23Price range 0Avg price 24Brand share 43Review moat 73Quality gap 78
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****570.04**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Good****4.8%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Good****51%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****79%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Bad****£8.72**
avg listing price — sweet spot $15–$100
**Returns**
**Bad****5.5%**
return rate — above 5% kills the launch gate
**Market size**
**Bad****£39K**
£39K/yr · 93K searches
**Growth**
**Bad****-64.7%**
90-day search growth — must beat 0% to launch
**Price range**
**Bad****£4.98–£14.96**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Signals**[** High Returns**](https://flapen.com/research/niches?market=uk&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United Kingdom niche tracking, letter box draft excluder internal is a £39K/yr Amazon United Kingdom market (93K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Jan–Oct–Nov–Dec. Verdict: Skip it — 35/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **letter box draft excluder internal market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **£26K–£35K**
- units × avg price
- **Conversion rate**
- **4.8%**
- **Avg BSR**
- **#168**
- **Page quality**
- **0%**
- **Prime**
- **96%**
- **Sponsored**
- **52%**
- **Out of stock**
- **2.5%**
- **Avg brand age**
- **42 months**
- **Avg seller age**
- **180 days**
## **Competition & brand share**
The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **▼falling
**Sellers**
**24**
**Top-5 brand share**
**79%**
Top 20: 100%
**Top-5 click share**
**51%**
Top 20: 95%
**Open market**
**17%**
- STORMGUARD49% - ZAVIA13% - Navoys7% - Newthinking5% - Merriway5% - Zhujiehigh4% - Open — no brand owns it (7 brands, 17%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -64.7% search growth over the last 90 days.
7K5KSpike '24Black Friday '24Holiday '24Spike '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Oct, Nov, Dec · busiest ÷ quietest = 3.7×
[**Open Trend **](https://flapen.com/research/uk/diy-tools/letter-box-draft-excluder-internal/trend)
## **Top letter box draft excluder internal search terms**
- **internal letterbox draught excluder**18K/yr-60.9%2.2% conv. - **letterbox draught excluder**28K/yr-78.8%2.3% conv. - **letter box draught excluder internal**25K/yr-79.5%5.7% conv. - **letter box cover internal**3K/yr+55.8%2.5% conv. - **internal letter box draught excluder**6K/yr-29.4%2.5% conv. - **letterbox cover internal**4K/yr-17.8%4.2% conv. - **internal letter box cover**4K/yr-27.5%2.0% conv. - **letter box draft excluder internal**5K/yr-37.2%5.7% conv. - **letterbox draught excluder internal**742/yr-84.8%6.3% conv. [**All search terms **](https://flapen.com/research/uk/diy-tools/letter-box-draft-excluder-internal/search-terms)
## **Top letter box draft excluder internal 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%£4K20%£8K30%£12K40%£16K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**STORMGUARD 06SR0150000W Internal PVC Letter Box Brush Cover-White External dimentions 335mm x 75mm Aperture 279mm x45mm White**STORMGUARD**£4.98**4.4★1,802 rev](https://www.amazon.co.uk/dp/B0057FVP3E) [2**Internal Letter Box Draught Excluder Cover With Brushes & Flap - White PVC**STORMGUARD**£5.52**4.2★2,032 rev](https://www.amazon.co.uk/dp/B009DNX88Q) [3**Internal Letterbox Draught Excluder 13.5 Inch (34.2cm) PVC Draught Letter Plate Seal Letter Box Flap - Prevents Draughts Coming Through The Letter Box - for Wooden or uPVC Doors - White with Flap**ZAVIA**£9.07**4.1★208 rev](https://www.amazon.co.uk/dp/B0BZ4ZJRS1) [4**Internal Letterbox Draught Excluder with Black Bristles - White PVC External Size - 34.2 x 7.9 x 0.8 cm 28.1 x 4.6 cm Internal Aperture**Navoys**£5.79**4.8★7 rev](https://www.amazon.co.uk/dp/B0FR56YPZB) [5**Newthinking Internal Letter Box Brush Cover White Letterbox Cover Draught Excluder with Brush Aluminium Letter Box Draft excluder Suitable for Home mailboxes**Newthinking**£8.15**4.4★23 rev](https://www.amazon.co.uk/dp/B0DZC5XGLH)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Internal Letterbox Draught Excluder 11.5 Inch Metal Letter Box Cover Flap Plate Seal Adjustable Chrome Replacement Letter Box for Wood or uPVC Doors (Silver)**SCDZY**£8.87**6 rev7mo ago](https://www.amazon.co.uk/dp/B0G4MCWGKY) [**11.5 Inch Internal Letter Box Flap & Draught Excluder (29.3 cm) - Letterbox Cover Internals Letter Plate for Wooden or uPVC Doors**Zhujiehigh**£8.26**11 rev8mo ago](https://www.amazon.co.uk/dp/B0G2FYMZ85) [**Internal Letterbox Draught Excluder with Black Bristles - White PVC External Size - 34.2 x 7.9 x 0.8 cm 28.1 x 4.6 cm Internal Aperture**Navoys**£5.79**7 rev10mo ago](https://www.amazon.co.uk/dp/B0FR56YPZB) [**Internal Letterbox Draught Excluder 11.5 Inch (29.2cm) Metal Letter Box Cover Flap Plate Seal Adjustable Chrome Replacement Letter Box for Wood or uPVC Doors Composite Front Doors (Gold)**SCDZY**£8.18**14 rev12mo ago](https://www.amazon.co.uk/dp/B0FJY5GZGR) [**KWJEIULSOQ Letter Box Flap 11.5In - Letterbox Cover with Brush Silver**KWJEIULSOQ**£6.93**18 rev1y ago](https://www.amazon.co.uk/dp/B0FBRF3ZJX)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Chimney Sheep Letterbox Draught Proofer - Interior Brush Seal**Chimney Sheep**£11.66**0.0★**▲ 964%**](https://www.amazon.co.uk/dp/B08P5T5ZPY) [**11.5 Inch Internal Letter Box Flap & Draught Excluder (29.3 cm) - Letterbox Cover Internals Letter Plate for Wooden or uPVC Doors**Zhujiehigh**£8.26**4.0★**▲ 376%**](https://www.amazon.co.uk/dp/B0G2FYMZ85) [**Internal Letterbox Draught Excluder 11.5 Inch Metal Letter Box Cover Flap Plate Seal Adjustable Chrome Replacement Letter Box for Wood or uPVC Doors (Silver)**SCDZY**£8.87**3.8★**▲ 267%**](https://www.amazon.co.uk/dp/B0G4MCWGKY) [**Internal Letterbox Draught Excluder with Black Bristles - White PVC External Size - 34.2 x 7.9 x 0.8 cm 28.1 x 4.6 cm Internal Aperture**Navoys**£5.79**4.8★**▲ 231%**](https://www.amazon.co.uk/dp/B0FR56YPZB) [**Internal Letterbox Draught Excluder 13.5 Inch (34.2cm) PVC Draught Letter Plate Seal Letter Box Flap - Prevents Draughts Coming Through The Letter Box - for Wooden or uPVC Doors - Brown Without Flap**ZAVIA**£7.99**4.5★**▲ 103%**](https://www.amazon.co.uk/dp/B0BZ4XBQFT)
**~~View all trending →~~**
## **What buyers say about letter box draft excluder internal**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**27%
*“This letterbox cover is good quality”*
**Size-Overall**20%
*“Perfect fit”*
**Value For Money**15%
*“Great value”*
**Advertised Vs Actual Product**8%
*“Does what I need”*
**Strength**5%
*“not too flimsy”*
**Assembly/Installation**4%
*“Easy to install”*
**Design-Overall**3%
*“looks so much classier on the door”*
**Ease Of Cleaning**2%
*“Clean & smart looking”*
**Ease Of Use**2%
*“This went on easy”*
**Functionality-Overall**2%
*“it still does the job”*
### **What buyers complain about **
**Quality-Overall**22%
*“Absolute rubbish”*
**Size-Overall**12%
*“just the wrong size for my letter box”*
**Durability**9%
*“Letter box not fit for purpose after 12 months”*
**Functionality-Overall**7%
*“Not effectiv”*
**Assembly/Installation**6%
*“The screws were very difficult to fix the two halves together”*
**Value For Money**6%
*“Worst £12.49 I ever spent”*
**Instructions/User Manual/Troubleshooting**3%
*“no instructions in the box”*
**Strength**3%
*“Very weak plastic corners”*
**Material Quality**3%
*“its plastic after all”*
**Frame Quality**2%
*“The frame FEELS like plastic”*
### **Top return reasons **
**Size-Overall**71%
**Color**7%
**Compatibility-Overall**5%
**Defective Material/Parts**5%
**Quality-Overall**3%
**Functionality-Overall**2%
**Material Quality**1%
**Strength**1%
**Thickness**1%
**Advertised Vs Actual Product**1%
## **Common questions**
- **Is letter box draft excluder internal profitable to sell on Amazon United Kingdom?**
- The niche generates £39K/yr across 25 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -64.7%. Flapen's verdict: Skip it (35/100).
- **How competitive is the letter box draft excluder internal niche?**
- 13 brands and 24 sellers compete. The top 5 products take 51% of clicks and top 5 brands hold 79% of demand.
- **What do buyers complain about in letter box draft excluder internal?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Durability. The return rate is 5.5% — above our launch gate.
- **When does demand for letter box draft excluder internal peak?**
- Demand peaks in Jan–Oct–Nov–Dec; the busiest month runs 3.7× the quietest.
- **What does it cost to enter the letter box draft excluder internal niche?**
- Listings span £4.98–£14.96; the average listing price is £8.72 (sweet spot $15–$100). The average incumbent carries 570 reviews — the moat a new listing must climb.
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