We consider a sliding 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 sliding window security lock for you.

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Our Top Picks:

Best Overall: Buy: Defender Security Sliding Window Security Lock READ REVIEW

Best For Great Price: Buy: Boao Sliding Window Security Lock READ REVIEW

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

Best With Grid: Buy: Ideal Security Sliding Window Security Lock READ REVIEW

Best For Customer Service: Buy: U.S. Patrol Sliding Window Security Lock READ REVIEW

Best For Keeping Toddlers: Buy: Burglabar Sliding Window Security Lock READ REVIEW

Best For Premium Quality: Buy: Tahikem Sliding Window Security Lock READ REVIEW

Best For Good Quality: Buy: Oyu Sliding Window Security Lock READ REVIEW

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

Best For Heavy Duty: Buy: Impresa Sliding Window Security Lock READ REVIEW

Best With Double Hung: Buy: Lockit Blockit Sliding Window Security Lock READ REVIEW

Best For Easy Security: Buy: Penmama Sliding Window Security Lock READ REVIEW

Best Overall: Defender Security Sliding Window Security Lock

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The Defender Security Sliding Window Security Lock is long-lasting, rigid and fits well with your regular use like a dream. The defender security sliding window security lock is made for slider windows and it is highly recommend. This secondary lock is constructed of aluminum and is used to lock your window in an open, ventilating position. Further, it is made with fast shipping and it is useful for windows.

The lock is perfect for vinyl windows, it feels safe and it is made for quick delivery. Finally, the defender security sliding window security lock comes with a nice natural finish.

Almost all customers agree that the lock will move with applied pressure. And, they also found that the lock is used to buy or make wood dowels for each window. Further, a few say that the state lockdown so found this affordable and safe lock for all windows and sliding door.s. In short, at the price, they believe that they got a steal of a deal with it.

• This does it’ssssss job and works well.
• This comes with a steel thumbscrew for use on metal horizontal sliding windows.
• Fits up to 1/8 in. Thick rails.
• This allows for great fit and it is best for good fit.

Best For Great Price: Boao Sliding Window Security Lock

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The Boao Sliding Window Security Lock is satisfactory and appropriate and fits well with your daily use. The boao sliding window security lock is great for peace of mind. So if you order these to place on your windows, you will be so happy they work like they’re supposed to. In addition, this fits for most vertical or horizontal sliding windows and doors. Finally, the boao sliding window security lock does the trick and it is suitable for various usages.

Almost all buyers quickly discovered that the lock is good for securing your windows. Further, they strongly agree that the lock is old school but the best security ever.

• Turning it clockwise and get it as tight as you can.
• 15 pieces sliding window locks with keys; color: silver.
• This can be used on new vinyl sliding windows.
• These are enough to install 2 each window.

Best For Mobile Home: Shop Square Sliding Window Security Lock

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If you often find yourself scrambling for a convenient and suitable lock, Shop Square Sliding Window Security Lock should be your first option for buying. The shop square sliding window security lock is designed to work with sturdy metal frames. Made of heavy-duty aluminum, the lock includes a vinyl lining to prevent you from scratching your window frame. 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.

Lastly, the shop square sliding window security 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.

Almost all customers agree that the lock is great for keeping windows open about 6 inches at night and knowing nobody can get in. And, a few also found that the lock can open 5 inches to let air in to be safe. Overall, many have used the lock for more than a few months without letup, and it shows no sign of giving up.

• This is perfect for vinyl windows, is black and it is sensible.
• This is much sturdier, feels safe and it is very simple.
• This is highly recommended and it is flexible in size.
• These fit a variety of window frames and are padded to protect the frame itself.

Best With Grid: Ideal Security Sliding Window Security Lock

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Compared with other locks in this category, the Ideal Security Sliding Window Security Lock has a convenient design. The ideal security sliding window security lock would be perfect with fast shipping, It is perfect for keeping toddlers and has a much better design. With this bar you can have your pet friend free to roam in and out without having to sacrifice your security. 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 has been supplying quality hardware to North American homes for over 60 years. Further, it is very simple, is worth the effort, it installed easily and has a better design. Lastly, the ideal security sliding window security lock works so well and it is constructed with quality workmanship.

Most buyers agree that the lock fits no problem and it is installed in 30 seconds. Moreover, they strongly agree that the lock has been a great security prevention device, to keep people out... as well as little ones out. In addition, they strongly agree that the sk110 has a fixed bar and an extendable bar inside the fixed bar.

• This fits all standard sliding glass doors.
• This provides for easy install, I bought this one and it has a great design.
• This lock is a great feature for any sliding patio door.
• This happens because the latch gets pressed against the wall or door frame.

Best For Customer Service: U.S. Patrol Sliding Window Security Lock

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U.S. Patrol 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 U.S. Patrol Sliding Window Security Lock looks attractive, it is very sturdy and has a screw in design. The leaf pattern provides a decorative flare to your home. This window safety bar provides the ideal window stopper for optimal peace of mind.

The lock allows for great things and makes for easy installation, It fits perfectly and has a great design. Lastly, the u.s. patrol sliding window security lock looks good, is very secure, it looks nice and has a decorative design.

Most buyers find that the lock is very attractive and adds style to the door, but it also adds security. Also, they strongly agree that the lock is not intended for child baby proofing and cannot be used on windows. Moreover, a few strongly agree that this sturdy bar eliminates what looks like an easy route in.

• This is highly recommended and it is black.
• Durable: the iron construction provides reliable durability for maximum security.
• This is a nice heavy bar, which is adjustable.
• This is great for customer service, it fits snug and has a much better design.

Best For Keeping Toddlers: Burglabar Sliding Window Security Lock

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For a low asking price, Burglabar Sliding Window Security Lock has managed to overwhelm their customers by packing as many features as they could. The burglabar sliding windowsecurity lock is a unique self-locking hinge type lock designed to offer additional security protection for sliding patio doors and sliding windows. Make sure this fits by entering your model number. Further, this makes for a great buy, is good to go, It worked fine and has a unique design.

Most importantly, the burglabar sliding window security lock looks good, is great for security, it works flawlessly and has an affordable design.

Most customers found that the lock is a good show of how secure these things truly are. Also, a few say that the lock is against burglary, but technology has been around since the 80s. In addition, a few strongly agree that the lock is easy to install and a quick fix so kids can’t open the slider. Without any doubt, this product passed the test and had very satisfied buyers eager to share their experience.

• This is designed for very easy installation and it is best for customer service.
• These are practically invisible and so much better than a bar.
• This is present, it requires no tools and has better design.
• I wasn’t able to find an exact replacement for the older storm door lock.

Best For Premium Quality: Tahikem Sliding Window Security Lock

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Tahikem slidingwindow securitylock is the epitome of what a great lock should be. The Tahikem Sliding Window Security Lock has a lock in place, It fits perfectly and has a great design. You can use the key wrench to slowly rotate the screw nut to secure it on the window track. The window safety lock is made of aluminum alloy, durable and sturdy.

Finally, the tahikem sliding window security lock matches for white sliding windows, sliding doors and vertical doors.

Almost all buyers found that the lock is easy to install and hold well when they’re on. In addition, they strongly agree that the lock is easy to use, tough for kids to mess with. And, they strongly agree that the two set screws on each lock add to the security to prevent sliding. comes with two set keys to make installing easier. Obviously, this product passed the test and had very satisfied buyers eager to share their experience.

• This is great for customer service, it has measure your windows and has a perfect design.
• Manufacturer says: we will reply within 24 hours.
• It ensures your family members ' safety.
• This has a strong grip, it allows for good security and has a double lock design.

Best For Good Quality: Oyu Sliding Window Security Lock

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The Oyu Sliding Window Security Lock's material feels more premium than its price would suggest. The oyu sliding window security lock works really well and has a perfect design. 8 sets of window locks for sliding windows, including 8 sliding window lock stopper,ssss 8 keys, 8 gaskets and 1 vertical key, can fully meet big family and large house needs. This adjustable lock for home is suitable for both windows and sliding doors.

The lock is great for sliding and it is easy to reuse. Also, the lock provides enough friction between the lock and the track to ensure that the window will not slide open. Most importantly, the oyu sliding window security lock has protective gaskets, is rustproof, it is good for quick install and has a great design.

Most buyers opine that the lock is easy to use, keeps the window locked in place. Moreover, they also found that the lock is easy to install and is the perfect added security for all types of sliding windows or doors. Also, they also found that the key lock feature is nice but the plastic spacer gives extra work. Overall, at the price, they believe that they got a steal of a deal with it.

• You can easily fix the window lock at any part with the vertical key.
• This is made of solid aluminum alloy, anti-rust and anti-aging.
• Lot of satisfied buyers.

Best For Horizontal Sliding Windows: Momentum S Sliding Window Security Lock

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Momentum S makes beautiful and great locks with classic and smartly chosen materials. The momentum 's sliding window security lock works as advertised and it is good for an excellent price. Make sure this fits by entering your model number. In addition, it is compatible with 7 x 6 x 1.7 inches.

Above all, the momentum sliding windowsecurity lock is highly recommended and it feels safe.

Most buyers quickly discovered that the lock is easy to install and helps with home safety. Further, a few say that the locks are for regular windows, they definitely are not. Moreover, a few 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, buyers found this to be one of the best locks for daily purposes.

• These fit on 99.9 percent of all windows.
• This is great for secure windows.
• This is easy to install and take off when needed.
• This is used for simple installing and it allows for easy installation.

Best For Heavy Duty: Impresa Sliding Window Security Lock

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The Impresa Sliding Window Security Lock has killer features for the price point. The impresa slidingwindow security lock is made with excellent quality and has a perfect design. 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 window clip locks are perfect for upper level windows and balcony doors where safety is a concern.

The lock is perfect for securing windows and doors, as well as child saving windows and doors. Lastly, the impresa sliding window securitylock is brand new, It is made for slider windows and has a great design.

Almost all buyers opine that the lock is easy to use and a great price for the number in the box. Moreover, a few say that the lock protects the surface and prevents sliding. To sum up, the tone of buyers is very positive and we believe that the lock suits the purpose.

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

Best With Double Hung: Lockit Blockit Sliding Window Security Lock

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Compared with other locks in this category, the Lockit Blockit Sliding Window Security Lock has a convenient design. The lockit blockit sliding window security lock is strong enough and it is suitable for child safety. 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 is for heavy duty material and it is highly recommend. Lastly, the lockit blockit sliding window security lock is good for fast delivery, used for single-hung windows and it feels safe.

Most customers agree that the lock is great in sliders and single and double - hung windows. Further, they say that the lock is a very sturdy bar for an average size window. And, a few say that the lock allows for windows to be locked open by 1 inch or more. In conclusion, many customers have used the lock for more than a few months without any issues, and it shows no sign of giving up.

• This fits to ensure security and works in single-hung windows.
• This is a slide mechanism that locks into place via adjustment.
• This does the trick and it fits perfectly.
• This will be strong and hold up well.

Best For Easy Security: Penmama Sliding Window Security Lock

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The Penmama Sliding Window Security Lock is specially designed for your regular use and has all useful features. The penmama sliding window security lock is best with a reasonable price, It is highly recommended and has a screw in design. Put some window lock latch in your kid's room to keep your toddler from falling out the windows. Moreover, it comes with rubber cushioning to prevent scratches or damage to the window and improve window security.

The lock is perfect for sliding patio doors, sliding glass doors, etc. Most importantly, the penmama sliding window security lock is showy and easy to be found.

Almost all customers opine that the lock can be used on not only windows but patio doors. Further, a few say that the lock is compatible with many different sizes. In conclusion, many buyers have used the penmama sliding window security lock for more than a few months without letup, and it shows no sign of giving up.

• This has sliding window stoppers and has a better design.
• One of the newcomers and featured product.