We consider a open window security lock to be a worthy investment in the long run. Let’s take you step by step, type by type, and find the best open window security lock for you.

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Our Top Picks:

Best Overall: Buy: Ideal Security Open Window Security Lock READ REVIEW

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

Best For Mobile Home: Buy: Shop Square Open Window Security Lock READ REVIEW

Best For Various Usages: Buy: Boao Open Window Security Lock READ REVIEW

Best For Fast Delivery: Buy: Lockit Blockit Open Window Security Lock READ REVIEW

Best With Key: Buy: Impresa Open Window Security Lock READ REVIEW

Best With Tracks: Buy: Jeacent Open Window Security Lock READ REVIEW

Best For Heavy Duty: Buy: Maxdot Open Window Security Lock READ REVIEW

Best For Customer Service: Buy: Securityman Open Window Security Lock READ REVIEW

Best For Strong Material: Buy: Turbro Open Window Security Lock READ REVIEW

Best For Patio Doors: Buy: Sidasu Open Window Security Lock READ REVIEW

Best Overall: Ideal Security Open Window Security Lock

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Ideal Security makes beautiful and great locks with classic and higher-grade materials. The Ideal Security Open Window Security Lock is great for little kids indoors, It looks nice and has a great design. Add safety, security, and a visual deterrent to your sliding patio door with ideal security’s sliding patio door security bar. The bar pivots up on the back hinge, so unlocking the door is easy and the bar is stored out - of - the - way.

The lock allows the window to partially open while being secured. Moreover, the lock is made of extruded aluminum (the same material used in cars and airplanes) and is both lightweight and strong. Most importantly, the ideal security open window security lock is designed for easy installation and has a screw in design.

Almost all buyers opine that the lock is a universal fit because of this problem. Further, a few say that the lock will hold up if someone really wants to break in. Moreover, a few strongly agree that the lock looks good, works perfectly and the dog can't chew on it like the broomstick. In conclusion, the tone of buyers is very positive and we believe that the lock suits the purpose.

• This will automatically block the door from sliding open from outside and inside.
• This looks nice, simple to use, and does the job intended.
• The Manufacturer says: our anti-lift lock adds a second level of security.
• This provides some peace of mind and function.

Best With Slider: Defender Security Open Window Security Lock

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The Defender Security Open Window Security Lock might be a relatively new release, but it's still nothing short of impressive this year, thanks to multiple price cuts and added new features over the past few months. The defender security open window security lock feels safe and it fits well. This secondary lock is constructed of aluminum and is used to lock your window in an open, ventilating position. Also, the lock is white, is made for slider windows and it feels safe.

Above all, the defender security open window security lock allows for great fit, is highly recommended and it is great for easy fix.

Almost all customers quickly discovered that the lock is quick and much easier than taking it all the way off. Furthermore, a few also found that the lock is easy enough to install, but they are too small for most window tracks. Moreover, a few say that the lock is easy to use yet sturdy at the same time. In short, buyers found this to be one of the best locks for daily purposes.

• This can cause marring of the window frames.
• This comes with a steel thumbscrew for use on metal horizontal sliding windows.
• This is used to buy or make wood dowels for each window.
• This is great for a slider window.

Best For Mobile Home: Shop Square Open Window Security Lock

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The Shop Square Open Window Security Lock's superior materials makes sure that it ages well with use. The shop square open window security lock is easy to install and use, Place the lock on one of the sliding doors tracks. Whether you are looking for a way to keep intruders out of your home or office or want a way to keep your children and pets from wandering off, track locks are a hassle-free way to achieve peace of mind. These window locks are easy to install with double door lock thumb screws securing sliding door & window tracks up to 3/16" wide with the rubber insert or 3/8" without the rubber window seal.

The lock is designed to be used with horizontal and vertical sliding windows and sliding doors alike, window vice locks have long been the preferred choice of homeowners looking for added security. Most importantly, the shop square open window security lock is designed to work with sturdy metal frames.

Most buyers found that the lock can open 5 inches to let air in to be safe still. In addition, they strongly agree that the lock is a great temporary fix for a broken window latch. Obviously, this lock passed the test and had very satisfied buyers eager to share their experience.

• This is ideal for securing a vertical window air conditioner or window fan setup.
• They can unscrew something, they can undo it and get out.
• This will be ok long term.
• Use this window lock to protect your family from intruders and more.

Best For Various Usages: Boao Open Window Security Lock

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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate lock. The Boao Open Window Security Lock is exactly that - it's a simple lock that hits all the right notes. The boao open window security lock fits for most vertical or horizontal sliding windows and doors. Please check your window track before buying. Moreover, this is great for peace of mind. Above all, the boao open window security lock worked perfectly and it is great for various usages.

Most customers think that the lock is good for securing your windows. And, a few say that the locks are enough to install 2 each window. Moreover, a few strongly agree that the lock is easy to install, sturdy, light weight but strong. In short, many have used the lock for more than a few months without letup, and it shows no sign of giving up.

• This can be used on new vinyl sliding windows.
• The Manufacturer says: put our product on the windowsill.
• Turning it clockwise and get it as tight as you can.
• 15 pieces sliding window locks with keys; color: silver.

Best For Fast Delivery: Lockit Blockit Open Window Security Lock

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The features department is where Lockit Blockit Open Window Security Lock truly manages to shine. The lockit blockit open window security lock is easy to adjust and it slides open. The Manufacturer says: Our home security bar will give you peace of mind in your house or apartment. The lock - it block - it offers an added layer of home security that allows the elderly to live as they want and reduces their concerns of being insecure.

The lock offers what every security expert recommends. In addition, it is unobtrusive and it fits perfectly. Lastly, the lockit blockit open windowsecurity lock does the trick, is white and it feels safe.

Almost all buyers opine that the lock is a great sturdy bar for the average size window. In addition, a few say that the lock is made of steel or a wooden dowel but is that really necessary. Moreover, a few say that note: if the lock - it block - it can be placed on the flat portion of the window frame or sash without the chain being in the way, then this will work. Overall, many customers have used the lockit blockit openwindow securitylock for more than a few months without any complaints, and it shows no sign of giving up.

• This allows a child to climb up onto a window.
• This is great in sliders and single and double - hung windows.
• This is an adjustable window home security and safety bar.
• This provides extra resistance from forced entry.

Best With Key: Impresa Open Window Security Lock

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We would, of course, be remiss if we didn't mention Impresa Open Window Security Lock for regular use. The impresa open window security lock is perfect for securing windows and doors, as well as child - saving windows and doors. Are your sliding doors and windows fully safe and secure?this pack of ten window locks for vertical sliding windows and horizontal sliding doors and windows simply screws on to the existing tracks. These locks grip incredibly firmly, making it impossible to force entry through forcing sliding mechanisms.

The lock is great for vinyl windows, It is brand new and has a simple screw in design. And, the lock fits well, It is made with excellent quality and has a screw in design. Lastly, the impresa open window security lock is made for slider windows, provides great value, It has a lock in place and has a perfect design.

Most customers agree that the lock protects the surface and prevents sliding. Moreover, they strongly agree that the lock is easy to use and a great price for the number in the box. Moreover, they strongly agree that the lock is perfect for sliding windows. Therefore, customers were eager to recommend it to friends and families.

• High quality aluminum sliding door and window lock.
• Fully adjustable slider locks that fit a range of door and window lock tracks.
• These also provide additional security to vulnerable sliding doors and windows.
• Install an additional window lock on the parallel track for extra security.

Best With Tracks: Jeacent Open Window Security Lock

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If you want nothing but a lock that is reliable, this Jeacent Open Window Security Lock is certainly a wise investment. The jeacent open window security lock is made with sturdy steel, It is built for adjustable length and has a unique design. Press the buckle and adjust its length to your needs. The air - conditioner security window lock wedge could also be used in some sliding doors of specific width and some small windows to keep it open locked at some height / width.

The lock works with tracks narrower than 1 inch wide. Moreover, the lock is white and it fits perfectly. Above all, the jeacent open window security lock includes hardware for easy installation and has a perfect design.

Almost all customers agree that the lock is expandable exactly as described. In addition, a few also found that the lock is designed to keep your window open at a height or width you need, while the outsider could not push it. In conclusion, most buyers agree that the lock suits them best, and no one questions it.

• This is highly recommend, it is made for nice looks and has a great design.
• This is made of two high-impact steel tubes for sturdy and stronger protection.
• Keep your home save and sound.us patent pending.
• This is suitable for double-hung windows for burglar-proof purposes.

Best For Heavy Duty: Maxdot Open Window Security Lock

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Maxdot line of locks comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Maxdot Open Window Security Lock is great on sliding, fits easily, it provides great value and has a great design. Make sure this fits by entering your model number. And, it feels safe, it is good for necessary items and has a double - open design. Lastly, the maxdot open windowsecurity lock can lock more solid for safer security.

Most customers agree that the lock is supposed to be easy and well. Moreover, they say that the lock works well and is good value window locks. In addition, a few say that the lock is designed for casement windows. Overall, many customers have used the lock for more than a few months without any complaints, and it shows no sign of giving up.

• This looks at first glance. In addition, it is good for windows with ac.
• Good investment for the long term.

Best For Customer Service: Securityman Open Window Security Lock

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Best part: Securityman Open Window Security Lock costs comparatively low and it is available to ship in 24 hours. The securityman openwindow securitylock will fit 14.25” to 24.25”, on “3 bars” or with an extension bar it will fit 26.9” to 37. Make sure that you are careful when you drill holes and tighten the philips flat heads into the edge of the sliding windows. And, it is easy to follow the instructions.

The lock is constructed with high grade iron. Lastly, the securityman open window security lock can be used as needed to give the bar one additional inch in length or used on a 3/4” narrow window frame.

Almost all customers found that the lock comes with great mounting hardware and can be used either vertically or horizontally. Furthermore, a few also found that the lock is ready to use right from the box. Moreover, they strongly agree that the bar stays locked in place wherever you adjust it.

• This is too long for the short opening.
• Keep your windows open but secure.
• This can be extended between 14.25" to 37" and be installed and removed in seconds.
• The Manufacturer says: our window security lock comes with everything needed for an easy install.

Best For Strong Material: Turbro Open Window Security Lock

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We would, of course, be remiss if we didn't mention Turbro Open Window Security Lock for regular use. The turbro open window security lock will work best when used on single-hung windows or horizontal sliding windows or patio doors. Simply extend the rod to your window length, lock the stainless steel peg into place, and use the included wrench to adjust the screw on the end for a good fit. The turbro stainless steel security bar is easy to install and is much more secure than other sliding security bars due to the peg and hole locking mechanism.

The lock is best for customer service, It is great for adjustable length and has a perfect design. Lastly, the turbro open window security lock fits for door / window type.

Most buyers agree that the lock is a great security bar for sliding glass doors. And, they also found that the lock is used to secure windows and doors. Moreover, they strongly agree that this adjustable security bar is then mounted vertically above the open window frame to prevent further movement. Therefore, customers were very happy to recommend it to friends and would-be buyers.

• This has a design for measuring the right length.
• This is highly recommend, has sliding door protection, it works fine and has a great design.
• This comes with a brick to break the glass.

Best For Patio Doors: Sidasu Open Window Security Lock

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Sidasu offers a variety of locks for personal choice and yet maintains quality in all the variants. The Sidasu Open Window Security Lock can also protect children from falling out of open windows. Stop forced entry or unexpected excidence. Also, it provides it with a longer longevity and makes it harder to break off or deform.

The lock is made with steel construction, it is very secure and has an affordable design. Further, this provides extra resistance from forced entry. Finally, the sidasu open window security lock fits discretely in the window / door tracks and looks decent.

Overall, the tone of buyers is very positive and we believe that the lock suits the purpose.

• This is highly recommend, it is very sturdy and has a better design.
• Press the buckle and adjust its length to your needs.
• Decide how high you want the window to open with the 10 adjustable settings.