There are several advantages of having a double hung window safety lock. Let’s take you step by step, type by type, and find the best double hung window safety lock for you.

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Our Top Picks:

Best Overall: Buy: Vision Hardware Double Hung Window Safety Lock READ REVIEW

Best For Mobile Home: Buy: Shop Square Double Hung Window Safety Lock READ REVIEW

Best For Customer Service: Buy: Window Wedge Double Hung Window Safety Lock READ REVIEW

Best For Great Price: Buy: Tahikem Double Hung Window Safety Lock READ REVIEW

Best For Fast Delivery: Buy: Lockit Blockit Double Hung Window Safety Lock READ REVIEW

Best For Horizontal Sliding Windows: Buy: Defender Security Double Hung Window Safety Lock READ REVIEW

Best With Easy Install: Buy: Primeline Double Hung Window Safety Lock READ REVIEW

Best For Attic Windows: Buy: Kidco Double Hung Window Safety Lock READ REVIEW

Best For Kid: Buy: Andersen Windows Double Hung Window Safety Lock READ REVIEW

Best For Other Applications: Buy: Esynic Double Hung Window Safety Lock READ REVIEW

Best Overall: Vision Hardware Double Hung Window Safety Lock

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The Vision Hardware Double Hung Window Safety Lock is long-lasting, rigid and fits well with your daily use like a dream. The vision hardware double hung window safety lock fits a wide range of vinyl wall thickness. Make sure this fits by entering your model number. And, the lock fits well and has a great design.

The lock is made with premium grade nylon for durability and strength. In addition, the lock comes with fit right and it allows for great fit. Above all, the vision hardware double hung window safety lock fits perfectly, It works well for direct replacement and has a perfect design.

Almost all buyers quickly discovered that the lock is the perfect replacement for the missing stop. Also, they say that the lock is easy to install and they certainly appreciate the availability on amazon.

• These fit on the side of the window in a precut slot.
• Fit slot size: 1.875" x 0.285".
• These fit andersen windows and are also a perfect fit. It works great.
• This is made for quick delivery and it looks great.

Best For Mobile Home: Shop Square Double Hung Window Safety Lock

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The Shop Square Double Hung Window Safety Lock is capable of outshining several other locks featured in this list in overall features for the price point. The shop square double hung window safety lock is black and it is worth the money. The sliding door lock allows you to leave sliding windows & doors securely locked in position, whether fully closed or ajar to allow a breeze. 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 has nice locks. Further, the lock is very strong and it is made of excellent quality. Finally, the shop square double hung window safety lock is sensible and is important.

Most buyers agree that the lock is made of aluminum and steel. And, a few strongly agree that the lock fits a variety of window frames and is padded to protect the frame itself. And, a few strongly agree that the lock will be OK long term.

• This is designed to work with sturdy metal frames.
• Secure your patio door, sliding glass door, and both horizontal & vertical sliding windows.
• This is highly recommend, is very effective and it is very secure.
• This provides great value, feel safe and it has added extra security.

Best For Customer Service: Window Wedge Double Hung Window Safety Lock

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The Window Wedge Double Hung Window Safety Lock is capable of outshining several other locks featured in this list in overall features for the price point. The window wedge double hung window safety lock is strong enough, is very strong, It is perfect for wood blinds and has an affordable design. The Manufacturer says: Our new slip-resistant base and commercial quality hook and loop material attaches to the window frame, making installation unbelievably quick and easy. The loop material easily attaches to the window frame ( see directions ) without the use of tools.

The lock makes for very easy installation, can be used for customer service and it includes hardware for easy installation. Also, it works really well, is very effective and it has a slide open. Most importantly, the window wedge double hung window safety lock is highly recommend, It fits well and has a much better design.

Most customers quickly discovered that the lock works well and has a low profile. Further, a few also found that the lock can someone forcibly open the window with this in place, but they would have to hit it a few times, making a good deal of noise.

• This is not in place of adult supervision.
• This definitely fits the bill.
• This works well for the price.
• This will work very well for home security.

Best For Great Price: Tahikem Double Hung Window Safety Lock

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Compared with other locks in this category, the Tahikem Double Hung Window Safety Lock has a convenient design. The tahikem double hung window safety lock has two fixing holes, which greatly enhance the holding power of the lock. The Manufacturer says: Easy to install. You can view our sixth picture, and it only takes five minutes to complete the installation. The window safety lock is made of aluminum alloy, durable and sturdy.

The lock is very effective, it is reliable and has a double lock design. Most importantly, the tahikem double hung window safety lock is designed by Tahikem, equipped with 4 locks, 4 keys, 4 transparent gaskets, 8 non-slip rubber pads, 1 vertical hex key, and 1 installation manual.

Most customers quickly discovered that the lock is easy to install and hold well when they’re on. Further, they strongly agree that the lock is easy to use, tough for kids to mess with. Moreover, a few also found that the two set screws on each lock add to the security to prevent sliding. comes with two set keys to make installing easier.

• This is highly recommended and it has a lock in place.
• This match for white sliding windows, sliding doors and vertical doors.
• It ensures your family members ' safety.
• They fit well and it is good quality.

Best For Fast Delivery: Lockit Blockit Double Hung Window Safety Lock

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The Lockit Blockit Double Hung Window Safety Lock's high-end materials makes sure that it ages well with use. The lockit blockit double hungwindow safety lock is unobtrusive and it feels safe. Control how high you want the window to open with the 13 adjustable settings. 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 is great for heavy duty materials and it is present. Finally, the lockit blockit doublehung windowsafety lock fits discretely in the window track and doesn't obstruct the view.

Most customers quickly discovered that the lock is because a person, from the outside, can remove the ac unit. 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 double hung window safetylock for more than a few months without any complaints, and it shows no sign of giving up.

• This is made for horizontal windows and it is easy to assemble.
• This is a great, sturdy bar for average size window.
• This is a slide mechanism that locks into place via adjustment.
• It is 1 inch by 1 inch wide on all sides.

Best For Horizontal Sliding Windows: Defender Security Double Hung Window Safety Lock

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Not everyone likes to purchase a lock for their regular use, but the Defender Security Double Hung Window Safety Lock would be an anomoly. In addition, the defender security double hung window safety lock is inserted into the keyhole, the thumbturn and cam are released, allowing it to be rotated open or rotated closed. Make sure this fits by entering your model number. This child - proof sash lock is strong, durable and made to last. Lastly, the defender security double hung window safety lock is sold in beautiful white color.

Almost all customers quickly discovered that the lock can be a bit of an issue on windows that are 30+ years old. Moreover, they strongly agree that the lock comes with #2 phillips head screws. Further, they also found that the lock maker fault but it would be easy enough to make a 1/8 " shim with a taper to it for the lock to fit anderson windows. Overall, most buyers found the lock suits best, and no one questions it.

• This can only be opened with the included key, keeping curious kids safely inside.
• This is a great item at a good price.
• This is designed to child-proof sliding windows and secure windows at high elevations.
• This provides good value, plus it is easy to crack near the edge.

Best With Easy Install: Primeline Double Hung Window Safety Lock

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The Primeline Double Hung Window Safety Lock's material feels more premium than its price would suggest. The primeline double - hung window safety lock solved the problem, is easy to change, it does the job and has a perfect design. The hole centers on the cam-action keyed locking latch. This child - proof designed lock can only be opened with the provided keys.

The lock makes for great solution and it is made with good latches. Lastly, the primeline double hung window safety lock works great and its quality is good.

Most customers quickly discovered that the lock is not so much trying to keep a teenager locked inside the room. Also, a few say that the lock is compatible with new windows, easy to install. In addition, a few say that this item does require the keeper piece for the lock to be secured. So, buyers were eager to recommend it to friends and families.

• This works fine and it is good for quick install.
• This is great for a great price and it works very well.
• This is not to have someone remove it from the inside.
• These are better suited as a third lock in the center of your window.

Best For Attic Windows: Kidco Double Hung Window Safety Lock

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Compared with other locks in this category, the Kidco Double Hung Window Safety Lock has a convenient design. The kidco double hungwindow safetylock makes for easy installation, It does the job and has a child - safe design. This window stop meets ASTM standards. The stop also controls the height and width of the locked window and can be mounted for single or double - hung and sliding windows. Most importantly, the kidco doublehung windowsafety lock is easy to apply, works fine, it works perfectly and has a great design.

Most buyers agree that the lock is easy to install but modifications could be made to it so they would be less noticeable if they tone down the size. Further, they strongly agree that the lock is made of plastic, for the price it should be metal. Moreover, a few say that the lock has pet gorillas that they call their "children" to be cute. Overall, buyers found this to be one of the best locks for daily purposes.

• Versatile mounting for single or double - hung and sliding windows.
• Kidco window stop helps to prevent accidents by keeping kids away from windows.
• This will not work for the top sash.
• This has a design for vinyl windows.

Best For Kid: Andersen Windows Double Hung Window Safety Lock

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The Andersen windows double hung window safety lock is specially designed for your daily purpose and has all useful features. The Andersen windows double hung window safety lock is much sturdier, it looks great and has a better design. Make sure this fits by entering your model number. In addition, the lock works fine and it worked fine.

The lock is packaged with colden solutions precision mechanical pencil to aid in installation. Also, it reasonably does the job and has a perfect design. Most importantly, the Andersen windows double hung window safety lock will only work with Andersen brand windows, including.

Most customers opine that the lock comes with excellent instructions. Moreover, a few strongly agree that the lock is easy to install and use. Also, they also found that the hardware is made to allow people to limit opening from the bottom only. Overall, at the price, they believe that they got a steal of a deal with it.

• This works well with Anderson 400 windows.
• The andersen double-hung window opening control device kit includes right and left-hand devices.
• This is designed for child proof windows.
• It will be harder for an adult to exert force on these locks in this case.

Best For Other Applications: Esynic Double Hung Window Safety Lock

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Next on the list, we've got yet another lock that manages to win our hearts. It's the Esynic Double Hung Window Safety Lock and it's widely considered as the lock that has the most suitable features. The esynic double hung window safety lock is a simple safety device that limits the opening distance of the door or window. The Manufacturer says: Our security lock is made from zinc, alloy and upvc. Moreover, it can be able to withstand greater pressure.

Above all, the esynic double hung window safety lock is perfect for high quality, is great for high quality material and it is best for other applications.

• This is easy to rust and damage.
• Delivers what they promise.