Best Sliding Window Lock — The Only List You’ll Need

Best Sliding Window Lock

Our top pick when it comes to the best sliding window lock is the Defender Security U 9809 Sliding Window Lock. It can be easily installed, and can even be used as a secondary lock. Additionally, it’s made from a strong, thick material that’s built to last.


The Short Version


Ofun

4 Packs Sliding Glass Door Window Locks Guard for Child Safety, Window Stoppers Adjustable with Strong Acrylic Adhesive, No Screws or Drills, White
74 Reviews
4 Packs Sliding Glass Door Window Locks Guard for Child Safety, Window Stoppers Adjustable with Strong Acrylic Adhesive, No Screws or Drills, White
  • Keep Baby & Pet Safe: Sliding door window locks can prevent your child from...
  • Sliding Window & Door Locks: Diamond-like cover and 12 position recline (...
  • Premium Materials: Two strong 35x55mm acrylic adhesive, no tools needed. TPE+ABS...

Last update on 2020-09-17 at 15:04 / Affiliate links / Images from Amazon Product Advertising API

The top adhesive sliding window lock is the Ofun model. It’s made from a plastic material with a premium acrylic adhesive and is also built to be safe and durable.

Moreover, the lock also comes with a handy 12-month warranty, as well as a 30 money-back guarantee.

Pros:

Setup: The Ofun window lock is pretty simple to set up with its adhesive.

Design: This model also features a unique design with its diamond-like cover and 12 position recline.

Warranty: Lastly, this window lock also comes with a 12 months warranty, as well as a 30-day money-back policy in case of any issues.

Cons:

Plastic: The lock itself is made from a not so strong plastic material.

Breakable: If enough force is applied, the lock can be breakable.


Burglabar

Burglabar 2 Pack - Great for Sliding Patio Door Lock, (Use 2 for doors), Sliding Window Lock, Sliding Basement Windows Lock, Child Safety Lock
1,261 Reviews
Burglabar 2 Pack - Great for Sliding Patio Door Lock, (Use 2 for doors), Sliding Window Lock, Sliding Basement Windows Lock, Child Safety Lock
  • Door & window locks: The Burglabar is a unique self-locking hinge lock designed...
  • Safety at home: Our window and door latch lock provides additional safety while...
  • No tools needed: Our Burglabar installs quickly and easily without tools and its...

Last update on 2020-09-17 at 15:04 / Affiliate links / Images from Amazon Product Advertising API

The top multipurpose lock is the Burglabar. This handy lock comes in a package with two and is designed for sliding patio doors, windows or normal doors.

In addition to that, it also sports a unique, transparent design and is pretty easy to install and adjust,

Pros:

Adjustable: This model is easy to adjust for your convenience.

Transparent: Additionally, this lock also comes in a unique, transparent style.

Install: The Burglabar is also pretty easy to install using the adhesive.

Self-Locking: Lastly, the window lock also comes with a useful,self-locking hinge.

Cons:

Adhesive: The adhesive may cause some damage to surfaces.

Plastic: Since its made of plastic, it may be a little less durable than other brands.


Lion Locks

Lion Locks Aluminum Sliding Door and Window Lock, Pack of 10
1,270 Reviews
Lion Locks Aluminum Sliding Door and Window Lock, Pack of 10
  • These slider locks are perfect for patio doors, sliding glass doors, sliding...
  • Heavy-duty aluminum construction, Inner vinyl lining prevents scratching damage
  • Additional gripping power securely locks window in closed or ventilating...

Last update on 2020-09-17 at 15:04 / Affiliate links / Images from Amazon Product Advertising API

Our most durable sliding lock has to the Lion Locks model. It offers heavy-duty, aluminum construction and additional gripping power, ensuring that the windows and sliding doors are securely locked.

In addition to that, the locks come in a pack of 10 at an affordable price too.

Pros:

Thumbscrews: The two thumbscrews included allow you to adjust where the lock should be.

10 Locks: You get 10 locks in a single pack.

Lining: The lock’s vinyl lining provides an easier and improved grip.

Material: Since this model sports a strong aluminum build, you can rest assured that it’s built to last.

Price: Lastly, it also comes at an affordable price.

Cons:

Thumbscrews: The only downside is that the thumbscrews are very small.


3M

The 3M Sliding Lock is a good option for childproofing your windows and sliding doors. It can also secure sliding closet doors, and is easy to install using the 3M adhesive, no tools required.

Additionally, it’s pretty easy to lock and unlock and features a unique transparent style.

Pros:

Design: Its transparent design makes it unique and aesthetic.

Versatile: This sliding lock can be used in many areas, such as both horizontal and vertical windows, sliding doors and closet doors too.

Price: It comes at an affordable price too.

Simple: The 3M Sliding Lock is very easy to install using the adhesive, and the lock itself is simple to operate too.

Cons:

Plastic: The lock is made from plastic material, which isn’t very durable.

Adhesive: The adhesive may damage some surfaces.


Maxdot Sliding

Sale
Maxdot 4 Sets Sliding Window Locks Stop Aluminum Alloy Door Frame Security Lock with Keys (4 Sets)
414 Reviews
Maxdot 4 Sets Sliding Window Locks Stop Aluminum Alloy Door Frame Security Lock with Keys (4 Sets)
  • Size: volume approx. 3 x 2.4 x 2.4 cm/ 1.18 x 0.94 x 0.94 inch(LWH), apply to...
  • Easy to install: there is no need to install extra tools, it equips a hex key in...
  • Durable material: it is strong, solid and sturdy, exquisite workmanship,...

Last update on 2020-09-17 at 15:04 / Affiliate links / Images from Amazon Product Advertising API

The most budget-friendly lock on our list today is the Maxdot Sliding model.

The Maxdot Sliding lock is easy to install and comes with a durable, long-lasting aluminum frame. It also features detachable key-inserts and stainless steel screws.

Pros:

Sliding Doors: The Maxdot Sliding lock can be used on both doors and windows.

Price: The model is also budget-friendly.

Frame: The frame is made from a strong aluminum alloy material, while the key is of stainless steel.

Key Inserts: The thumbscrews are key like structures for easy opening and closing of the lock.

Screws: Lastly, the screws provided are stainless steel for extra durability.

Cons:

Inserts: The key inserts are a little bit big.


Defender U 9819

Sale
Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4)
1,930 Reviews
Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4)
  • Secondary Lock
  • Fits up to 1/8 In. thick rails
  • Allows window to lock in ventilating position

Last update on 2020-09-17 at 15:04 / Affiliate links / Images from Amazon Product Advertising API

The best sliding lock with a knob is the Defender Security 9819. The quality of the lock itself is durable and strong and is also highly adjustable.

Additionally, you can also easily fit on rails of thickness up to 1/8″.

Pros:

Knob: The window lock features a knob style, which makes it easier to screw it into place.

Construction: The Defender Security lock also features a strong and durable build, with a tight grip on the railing.

Adjustable: Using the knob, the sliding lock is also highly adjustable.

Setup: Lastly, this model is also simple to install, which should take your very little time.

Cons:

Size: The only con, is that this model is quite small.


Defender Security

Sale
Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4)
1,930 Reviews
Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4)
  • Secondary Lock
  • Fits up to 1/8 In. thick rails
  • Allows window to lock in ventilating position

Last update on 2020-09-17 at 15:04 / Affiliate links / Images from Amazon Product Advertising API

The best sliding lock for vinyl windows is the Defender Security U 9809. This lock can easily be installed without a marring frame, and it comes with an easily adjustable jaw, that can fit most vinyl frames.

In addition, this model also features a powerful diecast build and can even be used as double-hung window locks for ventilation.

Pros:

Lock Lever: For more efficient performance, this lock includes a cam style locking lever.

Secure Sliding: This lock offers extra security as it will ensure to secure your windows and doors properly at all times.

Secondary Lock: Additionally, the Defender Security window lock can also be used as a double-hung window lock for ventilation.

Thickness: Lastly, it also has a decent thickness for wider rails.

Cons:

Knob: The knob needs to be turned carefully since it can break off if handled with force.


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