There are several advantages of having a extra window lock. In the following post, we will help you to select the best extra window locks.

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Our Top Picks:

Best Overall: Buy: Safetynex Extra Window Lock READ REVIEW

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

Best For Various Usages: Buy: Boao Extra Window Lock READ REVIEW

Best With Aluminium: Buy: Maxdot Extra Window Lock READ REVIEW

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

Best For Customer Service: Buy: Window Wedge Extra Window Lock READ REVIEW

Best For Horizontal Sliding Windows: Buy: Momentum S Extra Window Lock READ REVIEW

Best For Premium Quality: Buy: Tahikem Extra Window Lock READ REVIEW

Best For Quick Install: Buy: Oyu Extra Window Lock READ REVIEW

Best For Low Price: Buy: 1St Choice Extra Window Lock READ REVIEW

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

Best With Tracks: Buy: Jeacent Extra Window Lock READ REVIEW

Best Overall: Safetynex Extra Window Lock

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Safetynex has been making outstanding locks for years, thanks to a combination of clever design and high-end materials. The Safetynex Extra Window Lock is highly recommend, it is very strong and has a better design. Do they love to wander outside into your yard, or open windows and sliding closet doors. The baby door lock and window latch need 8 mm clearance between the door or window gap.

The lock is good for window lock security, It would be perfect with excellent quality and has a perfect design. Above all, the safetynex extra window lock works great, It is reliable and has a great design.

Most customers think that the lock can also be used on windows. And, a few say that the lock will work on a screen door. Moreover, a few strongly agree that the lock is easy to install.seem very secure. In short, many have used the lock for more than a few months without letup, and it shows no sign of giving up.

• This is great for traveling to use in hotels & rental properties.
• Does the thought of going on vacation with your active baby stress you out ?.
• Raising your child and keeping them safe and happy.
• The lock does not interfere with the opening of the sliding door or window.

Best With Slider: Defender Security Extra Window Lock

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The features department is where Defender Security Extra Window Lock truly manages to shine. The defender security extra window lock can be bought for good value and it fits well. Finish by tightening the thumbscrew with pliers to securely lock windows in closed or ventilating positions. Moreover, it comes with a nice natural finish.

The lock allows for a great fit, is useful for windows and it is reliable. And, the lock is best for good fit, feel safe and it works great. Above all, the defender security extra window lock comes with a steel thumbscrew for use on metal horizontal sliding windows.

Almost all customers quickly discovered that the lock was on and could even slide the lock to crack open the window as needed. In addition, they say that the lock is great for a slider window. Further, they also found that the lock could cause marring of the window frame. Overall, most buyers agree that the lock suits them best, and no one questions it.

• This is quick and much easier than taking all the way off.
• This will move with applied pressure.
• This works well for slider windows and it is reasonably.
• This will leave tiny indents/holes.

Best For Various Usages: Boao Extra Window Lock

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Next on the list, we've got yet another lock that manages to win our hearts. It's the Boao Extra Window Lock and it's widely considered as one of the most convenient locks you can buy. The boao extra window lock fits for most vertical or horizontal sliding windows and doors. The manufacturer says: Put our product on the windowsill. In addition, it works great and it works perfectly.

Lastly, the boao extra window lock is suitable for various usages and it is perfect for security locks.

Almost all customers opine that the lock can be used on new vinyl sliding windows. Also, they also found that the lock is easy to install, sturdy, light weight but strong.

• These are enough to install 2 each window.
• This does the trick, is great for a great price and it worked perfectly.
• 15 pieces sliding window locks with keys; color: silver.
• Turning it clockwise and get it as tight as you can.

Best With Aluminium: Maxdot Extra Window 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 Extra Window Lock is public, is great for decent quality and it worked fine. Make sure this fits by entering your model number. Further, this makes for smooth operation, works perfectly and it is made of durable ingredients.

The lock is very convenient, it is designed to worth every penny and has a great design. Finally, the maxdot extra window lock has locked in place and it works great.

Most buyers quickly discovered that the lock does a great job stopping the window from opening. Moreover, they also found that the lock was suitable for keeping small humans, pets, or people with dementia safe. To sum up, at the price, they believe that they got a steal of a deal with it.

• This is easy to install for sliding doors as well as for windows too.
• This is easy to use, for perfectly and are toddler-proof.
• This can be easily applied to most environments.
• It is really solid and it is worth the money.

Best For Mobile Home: Shop Square Extra Window Lock

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Shop Square makes beautiful and great locks with classic and smartly chosen materials. The Shop Square Extra Window Lock provides great value and it feels safe. Use this window lock to protect your family from intruders and more. 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 flexible in size and it works perfectly. Lastly, the shop square extra window lock is great for vinyl windows, has nice locks and it is worth the money.

Almost all buyers found that the lock fits a variety of window frames and is padded to protect the frame itself. In addition, they strongly agree that the lock will be OK long term. And, they strongly agree that the lock is a bit wider, there would be more surface area for the screw to be against. In short, buyers found this to be one of the best locks for daily purposes.

• This is very simple and it has added extra security.
• This can open each 5 inches to let air in to be safe yet.
• This is good for mobile home windows.
• This is ideal for securing a vertical window air conditioner or window fan setup.

Best For Customer Service: Window Wedge Extra Window Lock

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We would, of course, be remiss if we didn't mention the Window Wedge Extra Window Lock for daily purpose. The window wedge extra window lock is made of durable, impact - resistant, abs plastic and has a tapered groove on the bottom that holds a strip of (velcro brand) hook material that mates with an 8 inch strip of (velcro brand) peel and stick loop material. The window wedge with the slip-resistant base, was designed and tested to act as an adjustable window stop for double - hung, single - hung, and horizontal sliding windows. The loop material easily attaches to the window frame ( see directions ) without the use of tools.

The lock is super strong adhesive, is best for good fit, It works flawlessly and has a great design. And, the lock provides great value, It is very strong and has an affordable design. Finally, the window wedge extra window lock is designed for very easy installation, is great for wood blinds and it fits perfectly.

Most customers agree that the lock has been a really cost - effective and safe option. And, they also found that the lock had an adhesive velcro backing but with the new windows not needed. To sum up, at the price, they believe that they got a steal of a deal with it.

• This is a quick fix and really is very sturdy.
• This is highly recommend, feel safe and it works great.
• This has worked better than intended.
• This is good for kid's rooms.

Best For Horizontal Sliding Windows: Momentum S Extra Window Lock

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Next on the list, we've got yet another lock that manages to win our hearts. It's the momentum extrawindow lock and it's widely considered as one of the most convenient locks you can buy. The momentum extra windowlock works as advertised and it works great. Make sure this fits by entering your model number. Further, this is compatible with 7 x 6 x 1.7 inches.

Finally, the momentum 's extra window lock is highly recommend, is used for simple install and it is attractive.

Almost all buyers found that the lock can reach in and twist the lock open. Moreover, a few also found that the lock is great for peace of mind. In addition, 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. In conclusion, many buyers have used the lock for more than a few months without letup, and it shows no sign of giving up.

• These fit on 99.9 percent of all windows.
• These are for regular windows, they definitely are not.
• It takes a split second to loosen a screw and pull it out.
• This is great for secure windows.

Best For Premium Quality: Tahikem Extra Window Lock

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The Tahikem Extra Window Lock is the best quality lock on the market today. The tahikem extra window lock has great quality, it is reliable and has a perfect design. The Manufacturer says: In addition, we have improved the shortcomings that other window locks are not fixed and do not fit the middle track, so you can buy with confidence. The window safety lock is made of aluminum alloy, durable and sturdy.

The lock looks great and it fits perfectly. Also, the lock is equipped with a vertical key, which can be applied to the middle track of the window. Lastly, the tahikem extra window lock matches for white sliding windows, sliding doors and vertical doors.

Almost all buyers quickly discovered that the lock is easy to install and holds well when they’re on. Moreover, a few say that the lock is easy to use, tough for kids to mess with. Moreover, a few also found that the lock has a protector piece that goes between the bolt and the window to protect it from any damage. To sum up, the tone of buyers is very positive and we believe that the lock suits the purpose.

• Manufacturer says: we will reply within 24 hours.
• This is highly recommend, it feels safe and has a better design.
• This is very effective and it has a strong grip.
• This is built with high-quality material and it is made for easy installing.

Best For Quick Install: Oyu Extra Window Lock

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Not everyone likes to purchase a lock for their regular use, but the Oyu Extra Window Lock would be an anomoly. The oyu extra window lock is very strong, it has protective gaskets and has a great design. After installation, you can choose to remove the key to prevent the elderly or children from accidentally opening the window lock. This adjustable lock for home is suitable for both windows and sliding doors.

The lock comes with a plastic gasket, which can be placed between the window frame and the window lock to protect the window structure without leaving any scratches or damage. Further, this comes with the matching key, The installation can be completed in two minutes, no additional installation tools are required. Finally, the oyu extrawindow lock is made of solid aluminum alloy, anti-rust and anti-aging.

Almost all buyers found that the lock is easy to install and is the perfect added security for all types of sliding windows or doors. In addition, they strongly agree that the lock is easy to use, keeps the window locked in place. And, they also found that the key lock feature is nice but the plastic spacer gives extra work. In conclusion, the tone of buyers is very positive and we believe that the lock suits the purpose.

• You can easily fix the windowlock at any part with the vertical key.
• One of the newcomers and featured product.

Best For Low Price: 1St Choice Extra Window Lock

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The 1st choice, extra window lock, is specially designed for your daily use and has all the useful features. The 1st choice, extra window lock, works well, works very well and it is worth the money. Make sure this fits by entering your model number. In addition, it is super secure and it fits perfectly.

The lock makes for a great buy and it is unobtrusive. Finally, the 1St Choice Extra Window Lock is great for a low price and it provides great value.

Almost all customers quickly discovered that the lock is easy to "un-do" for safety if needed. Further, a few strongly agree that the lock is perfect for a few windows around the house. In addition, they strongly agree that the lock is easy to install but doesn't stick out like. In conclusion, many buyers have used the first choice extra window lock for more than a few months without letup, and it shows no sign of giving up.

• This does not fit most standard size windows.
• This is great for bracing windows with a/c units in them.
• This is great for making a small sliding window child.
• These fit on regular windows but not on thicker framed windows.

Best For Fast Delivery: Lockit Blockit Extra Window Lock

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Lockit Blockit offers a variety of locks for personal choice and yet maintains quality in all the variants. The Lockit Blockit Extra Window Lock fits discretely in the window track and doesn't obstruct the view. Make sure this fits by entering your model number. 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 provides extra resistance from forced entry. Further, the lock is a perfect childproof solution. Lastly, the lockit blockit extra window lock is present and it feels safe.

Most customers agree that the lock is easy to move the pegs and adjust the size. Further, a few strongly agree that the lock is a slide mechanism that locks into place via adjustment. Moreover, they strongly agree that the lock offers what every security expert recommends. With no doubts, this lock passed the test and had very satisfied buyers eager to share their experience.

• This is unobtrusive, is highly recommended and it works great.
• This bar will not move, no matter how much force is applied.
• Lock the height in place with the push of a pin.
• This is made of steel or a wooden dowel, but is that really necessary ?.

Best With Tracks: Jeacent Extra Window Lock

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Jeacent line of locks come in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Jeacent Extra Window Lock fits well and it is made for a nice appearance. The device doesn't fall when you lower the window. 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 can break the window lock adjusted from 10" to 17.5" in length. Above all, the jeacent extra window lock provides great value and it makes for great security.

Almost all customers opine that the lock is meant to prevent a window from being slidden open. Furthermore, 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.

• Press the buckle and adjust its length to your needs.
• This is easy to use and does what it says it does.
• This works with tracks narrower than 1 inch wide.
• This is made of two high-impact steel tubes for sturdy and stronger protection.