fire door gap gauge
Worth a lookShows low returns (0.3%), but a small market ($52K/yr) keeps it on the watch list.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Conversion
Incredible14.9%search→purchase rate — share of searches ending in a sale
Review moat
Incredible83.35avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Brand share
Good66%top-5 brand share — brands hold most of the demand
Price range
Okay£3.76–£25.06cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Okay63%top-5 click share — leaders hold, buyers still browse
Avg price
Okay£9.96avg listing price — sweet spot $15–$100
Growth
Bad-19.6%90-day search growth — must beat 0% to launch
Market size
Bad£52K£52K/yr · 35K searches
According to Flapen's Amazon United Kingdom niche tracking, fire door gap gauge is a £52K/yr Amazon United Kingdom market (35K searches/yr). The top 5 brands hold 66% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
fire door gap gauge market data
- Units sold / yr
- 6K–8K
- avg 250–500/product
- Revenue / yr
- £60K–£80K
- units × avg price
- Conversion rate
- 14.9%
- Avg BSR
- #209
- Page quality
- 0%
- Prime
- 82%
- Sponsored
- 59%
- Out of stock
- 4.8%
- Avg brand age
- 25 months
- Avg seller age
- 211 days
Competition & brand share
The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.Brands
15 rising
Sellers
20
Top-5 brand share
66%
Top 20: 100%
Top-5 click share
63%
Top 20: 100%
Open market
28%
- Safelincs36%
- Generic9%
- AOROPS9%
- Doormate - Quaytech UK7%
- Blunesta6%
- Kaelix5%
Demand
Weekly Amazon search volume, last 17 weeks — -19.6% search growth over the last 90 days.Top fire door gap gauge search terms
- fire door gap gauge25K/yr
- door gap measuring tool7K/yr
- fire door gap gauge checker tool3K/yr
Top fire door gap gauge 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.
All 17 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Fire Door Gap Gauge Checker Tool Small and Light Pocket Fit
Safelincs£3.764.5★891 rev
Door Gap Measuring Tool 1-15mm Fire Door Gap Gauge Checker Tool Engineering Ruler Feeler Gauges for House Engineering Inspection Flatness Measuring Tool Ruler(0.5mm/0.2mm) (0.5mm)
AOROPS£6.354.4★201 rev
DoorMate Fire Door Gauge
Doormate - Quaytech UK£25.064.0★1 rev
Door Gap Measuring Tool 1-15mm Fire Door Gap Gauge Accurate Door Clearance Measurement Durable and Easy to Use
Blunesta£4.723.3★5 rev
Door Gap Measuring Tool 115mm Fire Door Gap Gauge for Accurate Clearance Checks Durable Stainless Steel Measurement Tool
Kaelix£4.404.5★5 rev
Newest
by launch date
Fire Door Gap Gauge Calibrated Gap Measuring Tool for Fire Door Inspection & Compliance 210mm Precision Gauge for Inspectors Installers & Maintenance
Generic£12.890 rev
DoorMate Fire Door Gauge
Doormate - Quaytech UK£25.061 rev
SPIDER FIRE DOOR GAP GAUGE (BLACK)
Generic£24.936 rev
Metal Door Gap Measuring Tool 2 Pcs Fire Door Gap Gauge Accurate 0.5mm for Gaps Flexible Feeler Gauge Welding Wedge Tool
Ulmervion£8.100 rev
2PCS Fire Door Gap Gauge Metal Door Gap Measuring Tool Door Gap Measuring Tool Accuracy 0.5mm Measuring Tool for Gate Gaps Feeler Survey Gate Gap Measure Welding Wedge Feeler Survey
Othrion£8.042 rev
Trending
90-day click momentumFire Door Gap Gauge Calibrated Gap Measuring Tool for Fire Door Inspection & Compliance 210mm Precision Gauge for Inspectors Installers & Maintenance
Generic£12.890.0★
Metal Door Gap Measuring Tool 2 Pcs Fire Door Gap Gauge Accurate 0.5mm for Gaps Flexible Feeler Gauge Welding Wedge Tool
Ulmervion£8.100.0★
Spider Fire Door Gap Gauge Professional Aluminum Measuring Device with Anti-Scratch Coating for Fire Door gap Inspection
Generic£24.790.0★
DoorMate Fire Door Gauge
Doormate - Quaytech UK£25.064.0★
2PCS Fire Door Gap Gauge Metal Door Gap Measuring Tool Door Gap Measuring Tool Accuracy 0.5mm Measuring Tool for Gate Gaps Feeler Survey Gate Gap Measure Welding Wedge Feeler Survey
Othrion£8.045.0★
What buyers say about fire door gap gauge
What buyers praise and complain about, mined from review topics.What buyers love
“Easy to use and accurate”
“As described”
“Cheap enough to hand out to staff and contractors”
“Yes it fits in the pocket”
“Useful for measuring”
“Strong and sturdy, like the wife”
“Very easy to use and read”
“solid”
“Good quality”
What buyers complain about
“Not too robust”
“total waste of money”
Top return reasons
Common questions
- Is fire door gap gauge profitable to sell on Amazon United Kingdom?
- The niche generates £52K/yr across 17 tracked products. 1 of 6 products launched in the last 360 days are still selling. 90-day search growth is -19.6%. Flapen's verdict: Worth a look (52/100).
- How competitive is the fire door gap gauge niche?
- 15 brands and 20 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 66% of demand.
- What do buyers complain about in fire door gap gauge?
- Top complaints mined from reviews: Strength, Value For Money. The return rate is 0.3%.
- What does it cost to enter the fire door gap gauge niche?
- Listings span £3.76–£25.06; the average listing price is £9.96 (sweet spot $15–$100). The average incumbent carries 83 reviews — the moat a new listing must climb.