The market is filled up with a variety of window security locks, but the best window security locks that suits your needs can be a bit difficult to find. But, if you leave it in the hands of experts, like us, then you can be assured that you will land up with a reliable and trusted window security locks. So, without wasting any further time, let’s dive into the article.

We spent hours scouring the internet for the best window security locks, reading reviews and pulling from our own personal experiences to bring you our list of the top ten available on the market right now. We have presented a variety of options, so that there’s something out there for everyone. If you ask us personally, then the ultimate choice, that we would recommend you is Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4). If you are looking for something a bit on the cheaper side, then you have got your Sliding Window Locks Set (12 Pack). For the rest options, read the article till the very end.

All ten of the options on our list have their own unique features that make them great, it’s up to you to decide which one makes the most sense for you. if you are looking for an efficient and effective window security locks, our comparison chart should be of great help to you. Here is our comparative guide to the window security locks available as well as our recommendations

Best window security locks

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Product Title
Score

Defender Security U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – White Diecast Construction (Pack of 2)
9.8

Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4)
9.6

Lion Locks Aluminum Sliding Door and Window Lock, Pack of 10
9.1

Sliding Window Locks Set (12 Pack)
8.6

GE Personal Security Window/Door, 4-Pack, DIY Protection, Burglar Alert, Wireless, Chime/Alarm, Easy Installation, Ideal for Home, Garage, Apartment, Dorm, RV and Office, 45174, 4 Pack
8.4

Master Lock 265D Door Security Bar, Pack of 1, White
8.2

Ideal Security BK112W Window Security Bar with Child-Proof Lock, Adjustable, Small, White
7.6

Favide 8 Pack Adjustable Sliding Window Locks Aluminum Alloy Window Security Locks with Key for Home and Office
7.5

Maxdot Adjustable Sliding Window Locks Aluminum Alloy Window Door Frame Security Locks with Key for Home and Office (Double-Locks, 4 Sets)
7.1

Maxdot 8 Sets Adjustable Sliding Window Locks Aluminum Alloy Window Door Frame Security Locks with Key for Home and Office (Single-Lock, 8 Sets)
6.4

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Product Title

Defender Security U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – White Diecast Construction (Pack of 2)

9.8

Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4)

9.6

Lion Locks Aluminum Sliding Door and Window Lock, Pack of 10

9.1

Sliding Window Locks Set (12 Pack)

8.6

GE Personal Security Window/Door, 4-Pack, DIY Protection, Burglar Alert, Wireless, Chime/Alarm, Easy Installation, Ideal for Home, Garage, Apartment, Dorm, RV and Office, 45174, 4 Pack

8.4

Master Lock 265D Door Security Bar, Pack of 1, White

8.2

Ideal Security BK112W Window Security Bar with Child-Proof Lock, Adjustable, Small, White

7.6

Favide 8 Pack Adjustable Sliding Window Locks Aluminum Alloy Window Security Locks with Key for Home and Office

7.5

Maxdot Adjustable Sliding Window Locks Aluminum Alloy Window Door Frame Security Locks with Key for Home and Office (Double-Locks, 4 Sets)

7.1

Maxdot 8 Sets Adjustable Sliding Window Locks Aluminum Alloy Window Door Frame Security Locks with Key for Home and Office (Single-Lock, 8 Sets)

6.4

Defender Security U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – White Diecast Construction (Pack of 2)


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Defender Security U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – White Diecast Construction (Pack of 2)

$11.99  in stock
11 new from $11.99
Buy Now
Amazon.com
as of May 23, 2021 8:42 am

Features

  • EACH PACK INCLUDES – (1) Adjustable jaw that fits all vinyl frame rail thicknesses from 1/16" up to 1/2 in. thick. "Vise like" grip holds securely and will not mar frame. Allows window to lock in ventilating position; cam style locking lever; no tools required. This is for Vinyl Windows only.
  • SECURELY LOCK WINDOWS – These U 9809 sliding window locks for vinyl windows help keep them securely closed. The locks feature an adjustable jaw that has a “vise-like” grip, and they are capable of opening up to ½” wide.
  • ADD EXTRA SECURITY – Use these sliding window locks to prevent unwanted intruders and avoid falling accidents –keeping your windows closed when you want them the most secure! Air and a breeze can get in, but no intruders.
  • FOR USE ON MOST VINYL WINDOWS – These sliding window locks are for use on horizontal sliding windows and most vertical sliding (single hung) windows as a secondary window lock.
  • PRODUCT INFO – These sliding window locks have a diecast construction with a white painted finish and can fit most vinyl frame rail thicknesses ranging from 1/16” to ½”.

Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4)


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Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4)

$5.19
$3.70  in stock
3 new from $3.70
2 used from $2.29
Free shipping
Buy Now
Amazon.com
as of May 23, 2021 8:42 am

Features

  • Secondary Lock
  • Fits up to 1/8 In. thick rails
  • Allows window to lock in ventilating position
  • Easy to Install

Lion Locks Aluminum Sliding Door and Window Lock, Pack of 10


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Lion Locks Aluminum Sliding Door and Window Lock, Pack of 10

$14.98
$12.99  in stock
2 new from $12.99
Free shipping
Buy Now
Amazon.com
as of May 23, 2021 8:42 am

Features

  • These slider locks will fit along a track that is up to 3/16 inches wide. They will also fit without the rubber on a track that is up to 3/8 inches wide
  • These slider locks are perfect for patio doors, sliding glass doors, sliding windows etc
  • Heavy-duty aluminum construction, Inner vinyl lining prevents scratching damage
  • Additional gripping power securely locks window in closed or ventilating position
  • Easy installation with no tools required. Utilizes double thumbscrews to mount on window or sliding door track

Sliding Window Locks Set (12 Pack)


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Sliding Window Locks Set (12 Pack)

$8.38
$6.99  in stock
12 new from $6.99
Free shipping
Buy Now
Amazon.com
as of May 23, 2021 8:42 am

Features

  • Compatible with 7 x 6 x 1.7 inches

GE Personal Security Window/Door, 4-Pack, DIY Protection, Burglar Alert, Wireless, Chime/Alarm, Easy Installation, Ideal for Home, Garage, Apartment, Dorm, RV and Office, 45174, 4 Pack


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GE Personal Security Window/Door, 4-Pack, DIY Protection, Burglar Alert, Wireless, Chime/Alarm, Easy Installation, Ideal for Home, Garage, Apartment, Dorm, RV and Office, 45174, 4 Pack

$19.93  in stock
2 new from $19.93
2 used from $16.39
Free shipping
Buy Now
Amazon.com
as of May 23, 2021 8:42 am

Features

  • Includes 4 window/door alarms, each with 3 adjustable settings off/chime/alarm
  • Loud 120 decibel alarm sounds when door or window opens, helps deter intruder and alert residence
  • Easy and convenient to install, requires no wiring, mounting hardware and instructions Included, designed for indoor use only
  • Built in low battery test button to easily check battery life, Includes four LR44 batteries for each alarm
  • Comes with a 90 day limited warranty; Perfect for home, garage, apartment, dorm room, mobile home, RV, office and more

Master Lock 265D Door Security Bar, Pack of 1, White


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Master Lock 265D Door Security Bar, Pack of 1, White

$20.66  in stock
22 new from $20.66
2 used from $16.60
Free shipping
Buy Now
Amazon.com
as of May 23, 2021 8:42 am

Features

  • Heavy duty, dual-function door security bar prevents forced entry on hinged, patio, and sliding doors; Door stopper security bar is intended for indoor use
  • Door security bar design is portable and compact making it easy to store and ideal for travel, providing enhanced security in hotels or on vacation
  • Door security bar is adjustable from 27.5 in. (70 cm) to 42 in. (1 m) in length to fit most standard doors and sliding patio doors; Top door knob jam is easily removed for sliding door applications
  • Made with heavy duty 20-gauge steel for strength and security; Pivoting ball joint ensures door security bar has full contact with floor for secure fit while padded foot provides a strong grip without scratching
  • No tools required, simply adjust the bar length using the release button, prop under door knob and easily adjusted as needed

Ideal Security BK112W Window Security Bar with Child-Proof Lock, Adjustable, Small, White


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Ideal Security BK112W Window Security Bar with Child-Proof Lock, Adjustable, Small, White

$21.83  in stock
2 new from $21.83
7 used from $15.42
Free shipping
Buy Now
Amazon.com
as of May 23, 2021 8:42 am

Features

  • Adjustable between 10.6" to 16.625" (BK112) and between 15.7" to 26.75"(BK111)
  • Visual Deterrent: it's visible through the window and it will discourage potential burglars
  • Child-proof: child-safe locking mechanism prevents unwanted opening. Mount at variable heights, including out of reach of children
  • Quick and easy installation (either with screws or tape), it's not a pressure-mounted bar, so it won't get loose. Please watch the installation video before purchase to ensure it will work in your frame
  • Perfect for window installations: Install in-window air conditioners or pet door while locking your window or door in place

Favide 8 Pack Adjustable Sliding Window Locks Aluminum Alloy Window Security Locks with Key for Home and Office


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Favide 8 Pack Adjustable Sliding Window Locks Aluminum Alloy Window Security Locks with Key for Home and Office

$12.99  in stock
1 new from $12.99
1 used from $9.26
Free shipping
Buy Now
Amazon.com
as of May 23, 2021 8:42 am

Features

  • 【QUALITY MATERIAL】: made of aluminum alloy, which is sturdy and strong, and there's a yellow plastic cover outside the key handle, can serve you a long time
  • 【CONVENIENT TO INSTALL】: each lock is equipped with hex key, spin the key slowly through the hole, just holding on the track by key control, no additional installation tools,Comes with plastic protectice gaskets to prevent scratches or damage to the window
  • 【WIDE USAGE】: These sliding window locks can be used to prevent burglars and thieves, and avoid falling accidents by keeping the windows opened or closed; while protecting the safety of the family, it can also improve air circulation
  • 【APPLY TO WINDOWS AND DOORS】: size approx. 3 x 2.4 x 2.4 cm/ 1.18 x 0.94 x 0.94 inch(LWH), suitable for tracks with the height exceeding 1.2 cm/0.47 inches and apply to track heights more than 1.5 cm/ 0.6 inch,track thickness no greater than 1.6 cm/ 0.63 inch
  • 【WHAT YOU GET】: 8 sets of sliding window locks, including 8 pieces of window locks, 8 pieces of keys and 8 pieces of gaskets, abundant quantity to meet your needs and replacements

Maxdot Adjustable Sliding Window Locks Aluminum Alloy Window Door Frame Security Locks with Key for Home and Office (Double-Locks, 4 Sets)


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Maxdot Adjustable Sliding Window Locks Aluminum Alloy Window Door Frame Security Locks with Key for Home and Office (Double-Locks, 4 Sets)

$12.99  in stock
1 new from $12.99
Free shipping
Buy Now
Amazon.com
as of May 23, 2021 8:42 am

Features

  • Apply to windows and doors: make sure the track heights more than 1.5 cm/ 0.6 inches, track thickness no more than 1.6 cm/ 0.63 inches, not applicable to the middle track of the window, please check your window track before buying
  • Double open design: compared to other window locks, this window locks adopt enhanced double open design, which obtain stronger friction force so that it can lock more solid for safer security
  • Quality material: made of aluminum alloy, which is sturdy and strong, and there's a yellow plastic cover outside the key handle, can serve you a long time
  • Necessary items: open the screen window when the weather is hot in summer, which can improve air circulation, you can use the window locks to fix the screen window, it can prevent children from falling and prevent the thieves
  • What you get: 4 x sliding window locks with key; Note: multiple locks can be applied to heavy window or door together to increase safety

Maxdot 8 Sets Adjustable Sliding Window Locks Aluminum Alloy Window Door Frame Security Locks with Key for Home and Office (Single-Lock, 8 Sets)


More Info and Images

Maxdot 8 Sets Adjustable Sliding Window Locks Aluminum Alloy Window Door Frame Security Locks with Key for Home and Office (Single-Lock, 8 Sets)

$13.99  in stock
1 new from $13.99
1 used from $12.01
Free shipping
Buy Now
Amazon.com
as of May 23, 2021 8:42 am

Features

  • Apply to windows and doors: make sure the track heights more than 1.5 cm/ 0.6 inches, track thickness no more than 1.6 cm/ 0.63 inches, not applicable to the middle track of the window, please check your window track before buying
  • Convenient to install: each lock is equipped with hex key, spin the key slowly through the hole, just holding on the track by key control, no additional installation tools
  • Quality material: made of aluminum alloy, which is sturdy and strong, and there's a yellow plastic cover outside the key handle, can serve you a long time
  • Necessary items: open the screen window when the weather is hot in summer, which can improve air circulation, you can use the window locks to fix the screen window, it can prevent children from falling and prevent the thieves
  • What you get: 8 x sliding window locks with key; Note: multiple locks can be applied to heavy window or door together to increase safety

This article was created with a hope that you will able to find the best window security locks, suiting your requirements and we wish that we were able to succeed in our mission to do so. If you are looking for a cheap window security locks because you will be making limited use of it, go for the Ideal Security BK112W Window Security Bar with Child-Proof Lock, Adjustable, Small, White which will give you what you pay for. That being said, don’t forget to share the article with your friends and keep visiting geekydeck.com for more such informative and reviews articles.