It is important to have the best broken window lock. Let’s take you step by step, type by type, and find the best broken window lock for you.

Our review process: Show/Hide

Our Top Picks:

Best Overall: Buy: Burglabar Broken Window Lock READ REVIEW

Best With Slider: Buy: Defender Security Broken Window Lock READ REVIEW

Best For Good Quality: Buy: Momentum S Broken Window Lock READ REVIEW

Best For Window Ac Unit: Buy: Defender Security Sliding Window Lock READ REVIEW

Best With Key: Buy: Onvian Broken Window Lock READ REVIEW

Best With Double Hung: Buy: Primeline Broken Window Lock READ REVIEW

Best Overall: Burglabar Broken Window Lock

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The Burglabar Broken Window Lock's material feels more premium than its price would suggest. The burglabar broken window lock has features for safety at home, blends in nicely, it is solid and has a perfect design. Make sure this fits by entering your model number. Moreover, the lock looks good, works fine and it worked perfectly.

The lock is made from Lexan, which is a very strong transparent material using a special adhesive that bonds like a weld. Most importantly, the burglabar broken window lock makes for a great buy and it stays securely attached.

Most customers found that the lock is great for keeping toddlers inside once they've mastered how to open the sliding glass door. Further, they also found that the lock is against burglary, but technology has been around since the 80s.

• This makes for a great solution, works flawlessly, it worked fine and has a much better design.
• This is the simplest and most effective way to secure a sliding glass door.
• This is designed for easy install, It makes for easy installation and has a unique design.
• This is a good show of how secure these things truly are.

Best With Slider: Defender Security Broken Window Lock

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Defender Security offers a variety of locks for personal choice and yet maintains quality in all the variants. The Defender Security Broken Window Lock is feeling safe and it feels safe. Make sure this fits by entering your model number. In addition, the lock is best for good fit and it fits well.

The lock comes with a nice natural finish. Moreover, the lock comes with a steel thumbscrew for use on metal horizontal sliding windows. Finally, the defender security broken window lock does the job and it is useful for windows.

Almost all buyers quickly discovered that the lock is great for a slider window. Also, a few say that the lock is easy enough to install, but they are too small for most window tracks. In addition, a few say that the lock does it’ssssss job and works well. With no doubts, this lock passed the test and had very satisfied buyers eager to share their experience.

• This is quick and much easier than taking all the way off.
• This is locked into place it doesn't move at all.
• Fits up to 1/8 in. Thick rails.
• This on and can even slide the lock to crack open the window as needed.

Best For Good Quality: Momentum S Broken Window Lock

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The best part: momentum 's broken window lock costs comparatively low and it is available to ship in 24 hours. The momentum 's broken window lock does the job and it works perfectly. Make sure this fits by entering your model number. And, the lock is highly recommend, is great for an excellent price and it is attractive.

The lock is great for simple install, feels safe and it is very secure. Above all, the momentum brokenwindow lock is compatible with 7 x 6 x 1.7 inches.

Almost all customers found that the lock is easy to use and can be placed anywhere in the window. And, a few say that the lock fits on 99.9 percent of all windows. Further, they say that the only thing to remember is that the lock needs to be removed if the window needs to be used as an emergency exit. Overall, many have used the lock for more than a few months without any problems, and it shows no sign of giving up.

• This is solid, works as advertised and it is made for easy installation.
• This is great for peace of mind.
• These are for regular windows, they definitely are not.
• This is easy to install and take off when needed.

Best For Window Ac Unit: Defender Security Sliding Window Lock

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The Defender Security Sliding Window Lock's material feels more premium than its price would suggest. The defender security sliding windowlock allows the window to lock in a ventilating position. Please refer to the line art drawing before purchasing to check dimensions. These locks feature an adjustable jaw that has a “vise-like” grip, and they are capable of opening up to 1/2 in.

The lock is great for good quality, it allows for great ideas and has a child safe design. Above all, the defender security sliding window lock includes – (2) adjustable jaw that fits all vinyl frame rail thicknesses from 1/16" up to 1/2 in.

Most customers found that the lock takes seconds to install and is sturdy. Further, a few also found that the lock would make them struggle and make more noise than they probably bargained for. In conclusion, many have used the lock for more than a few months without any issues, and it shows no sign of giving up.

• This will hold the window enough to make burglar thing twice and set off the alarm.
• This is a deterrent, so that is something.
• This is locked in place, it fits perfectly and has an affordable design.
• This is the best, in the case of fire.

Best With Key: Onvian Broken Window Lock

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The broken window lock should be able to handle its purpose and duties with ease. The broken windowlock can be used with most sliding doors and glass windows. Before buying these window security locks, please make sure your window track thickness is no greater than 0.63 inches/ 16mm. In addition, it is made using heavy duty aluminum alloy to provide long-lasting use and unrivaled protection.

The lock comes with plastic protectice gaskets to prevent scratches or damage to the window. Above all, the Onvian Broken Window Lock is perfect for great quality, is made for wide application, It is designed for easy fix and has a perfect design.

Almost all customers found that the lock was good for motel business. Further, a few strongly agree that the lock will not be able to move the frame. To sum up, many customers have used the brokenwindow lock for more than a few months without any complaints, and it shows no sign of giving up.

• This is easy to install, and best of all, they work.
• Prevent thieves from stealing, keep your family safe.
• Prevent your child or anyone else from opening your sliding windows.
• These take seconds to install and definitely secure the window tightly.

Best With Double Hung: Primeline Broken Window Lock

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For a low asking price, Primeline Broken Window Lock has managed to overwhelm their customers by packing as many features as they could. The primeline broken window lock works well, works with exact match, It is designed for easy installing and has a perfect design. It engages the fixed rail of your window for locking. This window sash lock includes one cam - action latch with fasteners, and can be used on a wide variety of sliding windows.

Finally, the primeline broken window lock is made of a vinyl composite material and features an eco-friendly design.

Most buyers opine that the lock is easy to install but now it sticks out like a sore thumb. In addition, they say that the lock is identical in appearance and measurement to the prime-line. Overall, many buyers have used the primeline broken window lock for more than a few months without letup, and it shows no sign of giving up.

• This is constructed from a "green" composite material that is finished in white.
• This is made of cheap plastic instead of metal.
• It comes with two white screws.
• This is great as a drop-in replacement for the old ones they are replaced.