It is important to have the best old fashioned window lock. We are here to help you pick the best one for your needs from all the best available products in market today.

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Our Top Picks:

Best Overall: Buy: Shop Square Old Fashioned Window Lock READ REVIEW

Best For Great Price: Buy: Burglabar Old Fashioned Window Lock READ REVIEW

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

Best With Brass Finish: Buy: Defender Security Flip Lock READ REVIEW

Best For Overall Dimensions: Buy: Adonai Hardware Old Fashioned Window Lock READ REVIEW

Best Overall: Shop Square Old Fashioned Window Lock

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The Shop Square Old Fashioned Window Lock is specially designed for your daily use and has plenty of the most useful features. The shop square old fashioned window lock is highly recommend, is very effective and it is black. Make sure this fits by entering your model number. 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.

Finally, the shop square old fashioned window lock is ideal for securing a vertical window air conditioner or window fan setup.

Most customers quickly discovered that the lock was a bit wider, there would be more surface area for the screw to be against. Further, they strongly agree that the lock fits a variety of window frames and is padded to protect the frame itself. Also, a few say that the lock will be OK in the long run. To sum up, the tone of buyers is very positive and we believe that the lock suits the purpose.

• It is worth the money and it has a slide.
• This can open each 5 inches to let air in to be safe yet.
• It feels safe and it is of excellent quality.
• This is much sturdier, feels safe and it has nice locks.

Best For Great Price: Burglabar Old Fashioned Window Lock

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The Burglabar Old Fashioned Window Lock's high-end materials makes sure that it ages well with use. The burglabar old fashionedwindow lock is solid, works fine and it slides open. If your pinky fits between the two sliding pieces, so will the burglabar ( 3/8" ). The price is 2 pk. And, this allows for great things. It is great for security and has an affordable design.

Finally, the burglabar oldfashioned window lock is present and it is very sturdy.

Almost all customers quickly discovered that the lock works well if it is correctly installed. In addition, a few strongly agree that the lock is easy to install and since they are clear they are not too obvious. And, they say that the lock is best with command strips. To sum up, for most buyers, Burglabar product was what they were looking for.

• This is made in Canada, Burglabar’s adhesive bonds like a weld for maximum strength.
• This design is an amazingly strong and effective safety measure for any sliding glass door.
• This is perfect for keeping the door closed with the insert in.
• This requires no tools, is important, it worked perfectly and has a perfect design.

Best For Window Ac Unit: Defender Security Old Fashioned Window Lock

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The Defender Security Old Fashioned Window Lock is satisfactory and appropriate and fits well with your daily purpose. The defender security old fashioned windowlock is quick and easy with no tools required. Make sure this fits by entering your model number. This sliding window lock can be used as a secondary lock when the window is shut and to secure the windows during ventilation.

Finally, the defender security oldfashioned windowlock is great for good quality, is made for quick delivery and it fits perfectly.

Most buyers find that the lock can exactly when the level is facing down and there's no room because the wall is in the way. Further, they say that the lock is a deterrent, so that is something. Moreover, a few say that the lock works well, looks nice in the windows too. To sum up, most buyers agree that the lock suits them best, and no one questions it.

• This is easy to set up, and not crazy bulky.
• This allows the window only to open to the desired height.
• This is perfect for the job at hand.
• This will make them struggle and make more noise than they probably bargained for.

Best With Brass Finish: Defender Security Flip Lock

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The Defender Security Flip 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 flip lock is highly recommend, It provides great value and has a great design. Make sure this fits by entering your model number. This window flip lock is constructed of stamped steel and comes in an antique brass finish.

The lock is reasonable and it unlocks the windows. Above all, the defender security flip lock can pass for decent quality, is attractive, it is very sturdy and has a perfect design.

Almost all customers quickly discovered that the lock is not recommended for dual - pane windows. Furthermore, a few also found that the lock is easy to install with a tack hammer, easy to use, looks nice. Moreover, a few say that the lock is easy to install on wood - framed windows. In short, buyers found this to be one of the best locks for daily purposes.

• This will make a break-in more difficult and noisy.
• It is super sturdy, it looks good, it works perfectly and has a better design.
• This will work for dual panes.
• This is easy to install and provides the deterrent to opening the window as advertised.

Best For Overall Dimensions: Adonai Hardware Old Fashioned Window Lock

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The Adonai Hardware Old Fashioned Window Lock's material feels more premium than its price would suggest. The adonai hardware old fashionedwindow lock is used as a support for letting the window opens. It is very strong and gives good support to your window. Also, the lock looks good, is easy to communicate, with it works perfectly and has a better design.

Most importantly, the adonai hardware old fashioned window lock is made of cast iron & ships in 7-10 business days.

Most buyers agree that the lock is easy to install but the screws included are not great and stripped easily with a drill. Also, they say that the lock is perfect for holing windows both open and closed. Moreover, they also found that the locks are also able to “lock” closed.

• This is made in India and comes with a 2 - year warranty.
• Overall dimensions = 10.6" x 2.3" x 1.5" (273mm x 59mm x 39mm).
• Supplied as 2 pieces with matching screws.
• Finish displayed = black powder coated.