---
title: "Cat Flap for Glass Doors — £48K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/pet-supplies/cat-flap-for-glass-doors"
last_updated: "2026-07-31T09:00:39.620Z"
locale: en
meta:
description: "Niche score 45/100 · £48K/yr market · 39K searches/yr · £25.92 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · £48K/yr market · 39K searches/yr · £25.92 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Cat Flap for Glass Doors — £48K/yr Amazon UK Niche (2026) - Flapen"
---
# **cat flap for glass doors**
**Skip it**
A small market ($48K/yr) — this niche doesn't clear our bar today.
Market size 12Growth 17Conversion 56Competition 65Returns 41Price range 86Avg price 95Brand share 31Review moat 29Quality gap 76
**Avg price**
**Incredible****£25.92**
avg listing price — sweet spot $15–$100
**Price range**
**Great****£5.83–£83.07**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Competition**
**Good****46%**
top-5 click share — leaders hold, buyers still browse
**Conversion**
**Good****4.8%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Okay****3.7%**
return rate — above 5% kills the launch gate
**Brand share**
**Okay****86%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****3,569.55**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-15.8%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£48K**
£48K/yr · 39K searches
According to Flapen's Amazon United Kingdom niche tracking, cat flap for glass doors is a £48K/yr Amazon United Kingdom market (39K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 45/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **cat flap for glass doors market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **£39K–£52K**
- units × avg price
- **Conversion rate**
- **4.8%**
- **Avg BSR**
- **#140**
- **Page quality**
- **0%**
- **Prime**
- **93%**
- **Sponsored**
- **97%**
- **Out of stock**
- **8.3%**
- **Avg brand age**
- **56 months**
- **Avg seller age**
- **200 days**
## **Competition & brand share**
The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**14 **▲rising
**Sellers**
**57**
**Top-5 brand share**
**86%**
Top 20: 100%
**Top-5 click share**
**46%**
Top 20: 89%
**Open market**
**11%**
- Cat Mate64% - PetSafe13% - Petoasis3% - Fdit3% - ZIKEBTUY3% - Pet Mate2% - Open — no brand owns it (8 brands, 11%)
## **Demand & seasonality**
Weekly Amazon search volume, last 87 weeks — -15.8% search growth over the last 90 days.
1K750Prime Day '25Spike '25Black Friday '25 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Sep, Oct, Nov · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/uk/pet-supplies/cat-flap-for-glass-doors/trend)
## **Top cat flap for glass doors search terms**
- **cat flap for glass doors**15K/yr-17.8%3.6% conv. - **cat mate cat flap**14K/yr-24.9%6.2% conv. - **window cat flap**6K/yr+19.8%0.4% conv. - **catmate cat flaps**4K/yr-33.2%6.0% conv. [**All search terms **](https://flapen.com/research/uk/pet-supplies/cat-flap-for-glass-doors/search-terms)
## **Top cat flap for glass doors 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%£2K10%£5K15%£7K20%£10K1101001K10K100K 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**Cat Mate 4-Way-Locking Glass Fitting Cat Flap (210) - Secure Lockable Door for Small to Medium Sized Cats for Glass UPVC and Wood White**Cat Mate**£16.46**4.6★2,131 rev](https://www.amazon.co.uk/dp/B0002AQZL6) [2**Cat Mate 4-Way-Lock Flap with Liner to 50mm for Small & Average Cats White**Cat Mate**£13.57**4.6★5,642 rev](https://www.amazon.co.uk/dp/B000793LFK) [3**Cat Mate Microchip Activated Cat Flap (360) - For Cats and Small Dogs Accommodates up to 30 Pets for Single/Multiple glazing UPVC walls and Wood White**Cat Mate**£42.59**4.3★5,208 rev](https://www.amazon.co.uk/dp/B00MIRNPHI) [4**Cat Mate 4-Way-Locking Cat Flap for Small to Average-Sized Cats White**Cat Mate**£10.50**4.5★2,684 rev](https://www.amazon.co.uk/dp/B001UKX484) [5**Cat Mate Secure Locking Large Glass & Wall Fitting Cat Flap White**Cat Mate**£21.73**4.6★571 rev](https://www.amazon.co.uk/dp/B00ZC54WA2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Window Pet Door Adjustable to Fit Window Aluminum Frame Cat Door for Window Quick Install with No Damage Window sill cat flap (S)**ZIKEBTUY**£63.86**1 rev9mo ago](https://www.amazon.co.uk/dp/B0FYF8FLP4) [**Cat Mate 4-Way-Locking Glass Fitting Cat Flap (210G) - Secure Lockable Door for Small to Medium Sized Cats for Glass UPVC and Wood Grey**Cat Mate**£15.97**571 rev10mo ago](https://www.amazon.co.uk/dp/B0FQVZ7RDL) [**Compact Cat Door for Window Fits 27-32 Width Windows Quick Install with No Damage Aluminum Frame Pet Door for Window Cat Window Door Insert with Tight Seal 4 Lock Modes to Control Pet Access**Petoasis**£83.07**114 rev11mo ago](https://www.amazon.co.uk/dp/B0FHKGW15D) [**Lessmon Cat Door Flap For Interior Exterior Doors Outer 7.76x7.5x0.78in M**Lessmon**£8.36**866 rev3y ago](https://www.amazon.co.uk/dp/B0C85N6W43) [**Cat Flap for Glass Doors 4 Way Locking Pet Door Microchip for Cats Lockable Small Dog Window Gate Round Clear Flap Door for Interior Exterior Doors Cats Up to 6 kg**Ejoyous**£17.30**19 rev3y ago](https://www.amazon.co.uk/dp/B0BG56956Z)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Window Pet Door Adjustable to Fit Window Aluminum Frame Cat Door for Window Quick Install with No Damage Window sill cat flap (S)**ZIKEBTUY**£63.86**4.0★**▲ 295%**](https://www.amazon.co.uk/dp/B0FYF8FLP4) [**PetSafe Microchip Cat Door - Exterior or Interior Cat Flap - Multi-User RFID Access for up to 40 Pets - 4-Way Locking Weatherproof DIY Easy Install - White**PetSafe**£50.44**4.1★**▲ 228%**](https://www.amazon.co.uk/dp/B0756GW8SJ) [**BeeGo Window Restrictor for UPVC Windows Child Proofing & Cat Window Guard | Self-Adhesive No-Drill Window Lock | No Tools Required (White)**beego**£8.15**4.4★**▲ 169%**](https://www.amazon.co.uk/dp/B087PLHXMB) [**Cat Mate Microchip Activated Cat Flap (360) for Cats & Small Dogs. Brown**Cat Mate**£44.32**4.1★**▲ 139%**](https://www.amazon.co.uk/dp/B00ZC54W0W) [**Compact Cat Door for Window Fits 27-32 Width Windows Quick Install with No Damage Aluminum Frame Pet Door for Window Cat Window Door Insert with Tight Seal 4 Lock Modes to Control Pet Access**Petoasis**£83.07**4.5★**▲ 107%**](https://www.amazon.co.uk/dp/B0FHKGW15D)
**~~View all trending →~~**
## **What buyers say about cat flap for glass doors**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**20%
*“fairly straightforward to fit”*
**Quality-Overall**19%
*“Excellent product”*
**Ease Of Use**7%
*“Easy to use”*
**Value For Money**7%
*“Good price”*
**Advertised Vs Actual Product**7%
*“Does what is says it will do”*
**Assembly/Installation**5%
*“easy to set-up”*
**Strength**5%
*“Good and strong”*
**Durability**3%
*“seems very durable”*
**Instructions/User Manual/Troubleshooting**3%
*“instructions were clear”*
**Pet Friendly**2%
*“And my cats just love it, and also, it's easy to install”*
### **What buyers complain about **
**Functionality-Overall**15%
*“malfunctioning”*
**Ease Of Use**8%
*“they are struggling to get used to it.”*
**Quality-Overall**7%
*“Poor stick quality”*
**Assembly/Installation**7%
*“they blamed the installer”*
**Size-Overall**6%
*“when it arrived the door was tiny”*
**Instructions/User Manual/Troubleshooting**5%
*“awful instructions”*
**Durability**5%
*“Stopped working after a week”*
**Adhesion/Stickiness**5%
*“not sticky enough”*
**Escape Proof**5%
*“Cat escaped 7.5 hours after installing it”*
**Value For Money**4%
*“We brought a more expensive one that is another brand”*
### **Top return reasons **
**Size-Overall**64%
**Functionality-Overall**8%
**Compatibility-Overall**6%
**Escape Proof**3%
**Defective Material/Parts**3%
**Adhesion/Stickiness**2%
**Advertised Vs Actual Product**2%
**Locking Mechanism**1%
**Thickness**1%
**Ease Of Use**1%
## **Common questions**
- **Is cat flap for glass doors profitable to sell on Amazon United Kingdom?**
- The niche generates £48K/yr across 29 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is -15.8%. Flapen's verdict: Skip it (45/100).
- **How competitive is the cat flap for glass doors niche?**
- 14 brands and 57 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 86% of demand.
- **What do buyers complain about in cat flap for glass doors?**
- Top complaints mined from reviews: Functionality-Overall, Ease Of Use, Quality-Overall. The return rate is 3.7%.
- **When does demand for cat flap for glass doors peak?**
- Demand peaks in Sep–Oct–Nov; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the cat flap for glass doors niche?**
- Listings span £5.83–£83.07; the average listing price is £25.92 (sweet spot $15–$100). The average incumbent carries 3,570 reviews — the moat a new listing must climb.
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