window locks
Worth a lookShows a $1.2M/yr market, but high returns (4.3%) keeps it on the watch list.
Market size
Great$1.2M$1.2M/yr · 1.5M searches
Conversion
Great7.2%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Price range
Good$4.27–$30.56cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay76%top-5 brand share — brands hold most of the demand
Growth
Okay+17.1%90-day search growth — must beat 0% to launch
Avg price
Okay$11.53avg listing price — sweet spot $15–$100
Competition
Okay58%top-5 click share — leaders hold, buyers still browse
Review moat
Okay2,597.48avg incumbent reviews — the moat a new listing must climb
Returns
Okay4.3%return rate — above 5% kills the launch gate
According to Flapen's Amazon United States niche tracking, window locks is a $1.2M/yr Amazon United States market (1.5M searches/yr). The top 5 brands hold 76% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
window locks market data
- Units sold / yr
- 100K–125K
- avg 3,000–4,000/product
- Revenue / yr
- $1.2M–$1.4M
- units × avg price
- Conversion rate
- 7.2%
- Avg BSR
- #32
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 80%
- Out of stock
- 4.6%
- Avg brand age
- 43 months
- Avg seller age
- 168 days
Competition & brand share
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.Brands
17 falling
Sellers
42
Top-5 brand share
76%
Top 20: 100%
Top-5 click share
58%
Top 20: 95%
Open market
20%
- HYIEOU20%
- ZRFCXE19%
- PRIME-LINE17%
- Shop Square11%
- STERGDE8%
- Toddleroo by North States4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +17.1% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.8×
Top window locks search terms
- window locks491K/yr
- window locks for up and down windows228K/yr
- window lock186K/yr
- sliding window locks90K/yr
- window stopper73K/yr
- window security86K/yr
- window locks child proof42K/yr
- window locks for horizontal sliding windows50K/yr
- sliding window lock31K/yr
- window safety locks32K/yr
Top window locks 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
HYIEOU Sliding Window Locks (2 Sets) Secure Window Lock with Key Window Locks for Up and Down Windows & Horizontal Sliding Windows Adjustable Window Lock Sturdy and Durable Does Not Deform.
HYIEOU$8.054.6★1,258 rev
ZRFCXE Window Locks 4 Pack Sliding Window Locks with Key for Vertical & Horizontal Sliding Windows Doors Easv to Install Adjustable Security Window Lock for Patio Bedroom Home and Office (Black)
ZRFCXE$10.064.5★4,815 rev
Prime-Line U 9819 Aluminum Sliding Window Security Lock (4 Pack)
PRIME-LINE$4.274.4★11,731 rev
Window Locks 10 Pack for Vertical and Horizontal Windows Adjustable Aluminum Stoppers Window Security No-Drill Install Requires 28-36mm Clearance
Shop Square$10.314.2★1,197 rev
Sliding Window Locks (4 Sets) Security Window Locks with Keys Adjustable Aluminum Sliding Window Stops Easy Installation Without Drilling for Vertical and Horizontal Sliding Windows (Silver)
STERGDE$9.804.6★1,346 rev
Newest
by launch date
Sliding Window Locks with Key (4 Sets) Window Locks for Up and Down Windows and Horizontal Sliding Windows Window Stopper Easy to Install Without Drilling for Homes Apartments and Hotels(Silver)
ZRFCXE$9.8736 rev
Window Locks(4 Sets) Window Locks for Up and Down Windows Easy to Install Vertical & Horizontal Window Security Locks Adjustable Aluminum Window Stopper Lock(Silver)
BMEWKOS$6.94872 rev
4 Pack Sliding Window Locks Aluminum Security Locks for Sliding Windows & Doors Easy to Install
Sweet Online Deal$5.2163 rev
Nuk3y Sliding Window Security Locks (Aluminum 12 Pack)
NUK3Y PRODUCTS K3$9.85124 rev
12PCS Sliding Window Locks Aluminum Security Locks for Sliding Windows
THE UM24$10.79125 rev
Trending
90-day click momentumSliding Window Locks with Key (4 Sets) Window Locks for Up and Down Windows and Horizontal Sliding Windows Window Stopper Easy to Install Without Drilling for Homes Apartments and Hotels(Silver)
ZRFCXE$9.874.6★
Window Locks(4 Sets) Window Locks for Up and Down Windows Easy to Install Vertical & Horizontal Window Security Locks Adjustable Aluminum Window Stopper Lock(Silver)
BMEWKOS$6.944.4★
HYIEOU Sliding Window Locks (6 Sets) Secure Window Lock with Key Window Locks for Up and Down Windows & Horizontal Sliding Windows Adjustable Window Lock Sturdy and Durable Does Not Deform.
HYIEOU$15.864.6★
Nuk3y Sliding Window Security Locks (Aluminum 12 Pack)
NUK3Y PRODUCTS K3$9.854.2★
Prime-Line U 9823 Aluminum White Finish Sliding Window Security Lock (4 Pack)
PRIME-LINE$5.384.4★
What buyers say about window locks
What buyers praise and complain about, mined from review topics.What buyers love
“The locks work well”
“Very easy to assemble”
“Amazing quality”
“Easy Peasy”
“As advertised”
“Easy installation and it seems pretty sturdy so far”
“Great security”
“great value for money”
“it does the job”
“Easy fit”
What buyers complain about
“Does not fit”
“Breaks Easily”
“The locks are made of cheap”
“Didn't work”
“Couldn't use on my windows”
“Cheaply made”
“difficult to use”
“They break easily”
“My window was to thick”
“It is not common sense for someone who does not know how to install things”
Top return reasons
Common questions
- Is window locks profitable to sell on Amazon United States?
- The niche generates $1.2M/yr across 25 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is +17.1%. Flapen's verdict: Worth a look (55/100).
- How competitive is the window locks niche?
- 17 brands and 42 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 76% of demand.
- What do buyers complain about in window locks?
- Top complaints mined from reviews: Size-Overall, Durability, Locking Mechanism. The return rate is 4.3%.
- When does demand for window locks peak?
- Demand is steady year-round — the busiest month runs 1.8× the quietest.
- What does it cost to enter the window locks niche?
- Listings span $4.27–$30.56; the average listing price is $11.53 (sweet spot $15–$100). The average incumbent carries 2,597 reviews — the moat a new listing must climb.