We’ve spent hundreds of hours researching and comparing Sliding Window Stopper of all specifications to find the best one for any need (or budget). Here are the results.

The Best Sliding Window Stopper of 2020 – Top Rated & Reviewed

2,094 Reviews Scanned

Rank No. #1
Lion Locks Sliding Window and Door Locks (10 Pack), Adjustable Aluminum Security Screw Lock for 3/16-3/8” Track, Door Stopper Safety Lock, No-Drill Install, Requires 28-36mm Clearance for Screw Lock
  • SLIDING TRACK LOCK: Secure your patio door, sliding glass door, and both horizontal & Vertical sliding windows. Ideal for securing a vertical window air conditioner or window fan setup.
  • DURABLE & SENSIBLE: Made of heavy-duty aluminum the lock includes a vinyl lining to prevent you from scratching your window frame. The vinyl insert provides additional gripping power when locking your windows down.
  • NO TOOLS NEEDED: 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.
  • CHILD PROOF DOOR LOCK: Use this window lock to protect your family from intruders and more! The sliding door lock allows you to leave sliding windows & doors securely locked in position, whether fully closed or ajar to allow a breeze.
  • WINDOW LOCKS SECURITY: Whether you are looking for a way to lock in an AC unit window setup, as a camper lock replacement, or as part of your babyproofing house setup.
Rank No. #2
OYU Window Locks, 8 Pack Adjustable Sliding Door Lock with Key, Aluminum Window Security Safety Locks for Kids & Pets, Window Locks for Sliding Windows Window Stopper for Home and Office
  • 【WINDOW LOCKS SECURITY】Size approx. 1.18 x 0.94 x 0.94 inch, apply to track with more than 0.6 inch heights and less than 0.63 inch thickness. Effectively reduce the risk of children & pets falling from heights, guard against theft. Keep your house safe, limit and fix windows for ventilation to improve indoor air quality.
  • 【UPGRADE PROTECTION DESIGN】This window lock is made of solid aluminum alloy, anti-rust and anti-aging. The upgraded vertical window locks design allows the key to be removed and stored properly to prevent toddlers from opening it by mistake. One more layer of protection to eliminate all potential hidden dangers.
  • 【PROTECTIVE GASKETS】Each sliding window locks also comes with a plastic protective gasket to prevent scratches or damage to the window. This locks for windows with protective gasket can provides enough friction between the lock and the track to ensure that the window will not slide open.
  • 【EASY TO INSTALL】This adjustable lock for home is suitable for both windows and sliding doors. No hole installation saves time and effort. All you need to do is to spin the key through the hole and fix the window stopper on the track. You can easily fix the window lock at any part with the vertical key. No additional installation tools are needed. Easy to reuse and re-install.
  • 【WHAT YOU GET】8 sets of window locks for sliding windows, including 8 sliding window locks stopper, 8 keys, 8 gaskets and 1 vertical key, can fully meet big family and large house requirement. Note: Heavy doors and windows should be fixed with multiple locks at the same time to improve stability and safety.
Rank No. #3
Window Locks, 4 Sets Sliding Security Window Locks with Key for Vertical&Horizontal Sliding Windows&Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office
  • 【Compatibility】 Window locks are applicable for sliding windows, sliding doors and vertical doors. Locks are 2.4 inches long and fit tracks up to 0.4 inches wide inches with rubber cushioning or up to 0.67 inches without rubber cushioning. Please measure your track to ensure proper fitment.
  • 【Screw In Design】 Sliding window locks utilizes double screws to mount on sliding window/door tracks, prevent sliding and add more security. Simply screw them with hex keys (included) for fully secure windows/doors or to allow for ventilation, no extra tools needed. Comes with rubber cushioning to prevent scratches or damage to the window and improve window security.
  • 【Quality Aluminum Alloy】 Sliding door and sliding window stoppers: The strong aluminium will remain secure which is sturdy and strong, and the cute yellow key handle is showy and easy to be found.
  • 【Widely Use】Slider window locks are perfect for sliding patio doors, sliding glass doors, etc. Feel free to open the windows a few inches to get both fresh air and peace of mind, because they no longer open enough for someone to slip into your house without breaking the window and alerting your dogs. Put some window lock latch to your kid's room to keep your toddler from falling out the windows.
  • 【Package Includes】 Pack of 4 sliding window locks with rubber cushioning and keys; Apply multiple window locks can increase sliding door/window security.
SaleRank No. #4
Defender Security U 9802 Sliding Window Lock, 1/4 in., Extruded Aluminum, White Painted Finish (Pack of 2)
  • Used on vertical and horizontal sliding windows as a secondary window lock
  • For use on 1/4 in. max. thick fins
  • White painted finish
  • Extruded aluminum construction with steel thumbscrew
  • Used on vertical and horizontal sliding windows as a secondary window lock
SaleRank No. #5
Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4) , Silver
  • Secondary Lock
  • Fits up to 1/8 In. thick rails
  • Allows window to lock in ventilating position
  • Easy to Install
  • For heavier-duty locks see item no's U-9800, U-9802, U-11127, U-11128, U-9810 or U-9812. Finish by tightening thumbscrew with pliers to securely lock windows in closed or ventilating positions. For non-marring locks see no's U-9820, U-9821, U-10876 and U-10551. For vinyl windows use U-9809 or U-10547
Rank No. #6
4 Sets Sliding Window Locks, Security Window Lock Aluminum with Key, Window Stoppers for Vertical & Horizontal Slide Door, Adjustable Security Locks, for Child Home Bedroom Hung Windows (Double Lock)
  • Measure Your Windows: In order to ensure the perfect application of Tahikem window stopper, please make sure that the height of your window track exceeds 5/8 inch(1.6cm) and the width does not exceed 19/32 inch(1.5cm). Tahikem window locks is equipped with a vertical key, which can be applied to the middle track of the window. (Please check the second product size chart before purchasing)
  • Double lock design: Each window lock has two fixing holes, which greatly enhance the holding power of the lock. You can use the key wrench to slowly rotate the screw nut to secure it on the window track. It only takes 5 minutes to complete the installation. Our window locks are also equipped with 2 rubber non-slip protection pads to prevent scratches or damage to your window and improve stability.
  • High-quality Material: The window safety lock is made of aluminum alloy, durable and sturdy. The anti-rust coating makes it a good match for white sliding windows, sliding doors and vertical doors. 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.
  • Tahikem Safety Window Lock: It ensures your family members safety. Effectively reduce the risk of children and pets falling from high windows. By locking your windows, it can also protect your property against damage during heavy rains and hurricanes, or guard against theft and avoid property damage during your traveling period.
  • Package Includes: This sliding window locks is exclusively developed and 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. If you have any issue about the window locks, please contact us. We will reply within 24 hours.
SaleRank No. #7
Defender Security U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – White Diecast Construction (Pack of 2)
  • EACH PACK INCLUDES – (2) Adjustable jaw that fits all vinyl frame rail thicknesses from 1/16" up to 1/2 in. thick. "Vise like" grip holds securely and will not mar frame. Allows window to lock in ventilating position; cam style locking lever; no tools required. This is for Vinyl Windows only.
  • SECURELY LOCK WINDOWS – These U 9809 sliding window locks for vinyl windows help keep them securely closed. The locks feature an adjustable jaw that has a “vise-like” grip, and they are capable of opening up to ½” wide.
  • ADD EXTRA SECURITY – Use these sliding window locks to prevent unwanted intruders and avoid falling accidents –keeping your windows closed when you want them the most secure! Air and a breeze can get in, but no intruders.
  • FOR USE ON MOST VINYL WINDOWS – These sliding window locks are for use on horizontal sliding windows and most vertical sliding (single hung) windows as a secondary window lock.
  • PRODUCT INFO – These sliding window locks have a diecast construction with a white painted finish and can fit most vinyl frame rail thicknesses ranging from 1/16” to ½”.
Rank No. #8
Navaris Adjustable Sliding Window Locks (Pack of 4) - Security Window Lock for Windows and Door Tracks - Vertical or Horizontal Aluminum Track Stopper
  • LOCK IN PLACE: Keep horizontal or vertical sliding windows locked in place with the adjustable locks by Navaris. These window locks for horizontal sliding windows stop movement past a certain point, allowing for ventilation while staying secure.
  • STAY SECURE: Use window stoppers for vertical sliding windows to limit the range that sliding windows and doors can go. That way you can keep windows open to allow fresh air to come in, without creating an unnecessary burglary risk.
  • CHILDREN AND PETS: Help keep kids, cats and dogs safely inside where they belong by limiting the distance that windows and patio doors can open. A key is needed in order to open the window locks for vertical sliding windows.
  • HOW TO INSTALL: Step 1. Unscrew the lock. Step 2. Position the lock in the desired position on the door or window track. Step 3. Screw the window stop to fix it in place.
  • MADE OF ALUMINUM: The window stoppers are made of sturdy aluminum alloy, for a strong yet lightweight solution.
Rank No. #9
4 Pack Adjustable Sliding Window Locks Window Wedge Window Stop for Home Office and Car by HRLORKC
  • Size: Window locks length: 2.4 inch, width: 1.6 inch, height: 1 inch. Packing: 4 Pieces. Color:Grey
  • Note: Fit on window track spacing from 1.02" to 1.69" and track high more than 0.59", in case affecting the stability of the security lock.
  • Install: Close or open the window before installing the window stop block; insert the leg tightly into the window groove, turn the knob clockwise until the product is fixed. Use 2 locks in heavy windows/doors to increase security...
  • Advantage: Rubber irons and window stoppers are covered with rubber can increase friction and avoid scratching windows and noise.
  • Guarantee: Any question, please feel free to contact us. We guarantee give you return or refund.
Rank No. #10
Toddleroo by North States Sliding Window & Door Wedge Locks | Limits The Space That Windows and Sliding Doors can Open | No Tools Required | Baby proofing with Confidence (4-Pack, White)
  • WINDOW & DOOR WEDGE LOCKS (4-pack): The perfect solution to prevent your curious little one from sliding windows and doors open.They work in multiple places, including double hung and horizontal sliding windows and doors, by limiting the height the window or door can open.
  • NEW NAME - SAME GREAT BRAND YOU TRUST: Toddleroo by North States not only makes the baby gates and yards that you love, but we now have a full line of babyproofing products to keep baby safe anywhere in your home!
  • SAFETY & CONVENIENCE: Our new childproofing line was thoughtfully designed to maximize safety, ease of use, and functionality. Easy to install, and safety you and your family can count on.
  • SIMPLE YET EFFECTIVE:The Window & Door Wedge Locks feature an easy hook and loop installation, with no tools, no screws, no nails, no damage to your windows or sliding doors. The soft white color stylishly blends in with any home decor.
  • MAKE YOUR HOME SAFE: Babies like to explore all those nooks and crannies’ around the house. With this 4-pack of sliding window and door wedge locks, you can help to keep your little one out of harm’s way.

Last update on 2022-01-22 / Affiliate links / Product Titles, Images and Descriptions from Amazon Product Advertising API

Top Rated Sliding Window Stopper to Buy Now


Why You Should Buy Best Sliding Window Stopper from Amazon

Amazon is not the only store that sell Sliding Window Stopper. However, there are several compelling reasons why you should buy Sliding Window Stopper from them, with the suitable Price and Reviews. Here are five:

(1) Amazon Makes Shopping Sliding Window Stopper Personal

Amazon is very good at making recommendations of Sliding Window Stopper based on your search history. From time to time, they will even show you discounted prices on Sliding Window Stopper that you previously expressed an interest in. They also make your shopping experience a little easier by showing you items that you recently viewed.

(2) Amazon Checkout is Easy

Amazon checkout is easy, especially if you already have an account. You can add Sliding Window Stopper to your cart and go through a multi-step checkout process, or you can buy Sliding Window Stopper with only one click by using your stored credit card information.

(3) Amazon Has Lots of Social Proof

Before you make a purchase for Sliding Window Stopper, you want to know that the company you are dealing with is legitimate and that others trust the company enough to make a purchase. You may also like to read what others are saying about the product in the review section. Amazon does all of this quite well.

(4) Amazon Has Great Sliding Window Stopper Images and Descriptions

In addition to still images, many of Amazon’s Sliding Window Stopper have videos. This makes it easier for you to see exactly what you are purchasing. Amazon’s Sliding Window Stopper descriptions are also quite good. In many cases, Amazon repeats the descriptions furnished by the manufacturer. In other cases, they write their own.

(5) The Amazon Site is Easy to Navigate

Navigating the Amazon site is easy. Even though the site is huge, you will not feel overwhelmed when searching for Sliding Window Stopper. This is partly due to Amazon’s filtering process. You can search for items by brand, price or user rating. You can also search for specific features.

How to Choose the Best Sliding Window Stopper (with Price and Reviews)

Although most Sliding Window Stopper are similar, there are several differences worth noting. Here are nine criteria to consider when choosing an Sliding Window Stopper:

(1) Sliding Window Stopper Price and Reviews

Although price is not the only factor to consider, it is nevertheless extremely important. The price of an Sliding Window Stopper should be in line with its value. You can compare Sliding Window Stopper reviews to make sure you are getting a fair price. This is easy to do on Amazon.

(2) Demand

The demand for a particular Sliding Window Stopper is a good indication of its ability to perform the functions for which it was designed. If a product has been around for a while and still has a high demand, it is likely a good product.

(3) Material

Sliding Window Stopper materials differ from manufacturer to manufacturer. Consider where and how you will be using your Sliding Window Stopper to determine if one material would be better than another.

(4) Size

Like most products, Sliding Window Stoppers come in various sizes. Do you need a large Sliding Window Stopperor a small one? Think about where you will use your Sliding Window Stopper in order to determine the best size. You can also read the customer reviews on Amazon to see what others are saying about the size of the unit they purchased.

(5) Color

Sliding Window Stoppers also come in a variety of colors. Do you need a particular color? You should also consider whether the color of your Sliding Window Stopper would have any effect on the efficiency of its operation.

(6) Durability

The durability of an Sliding Window Stopper will be contingent on the materials used as well as the quality of the manufacturing process. Additionally, the type of Sliding Window Stopper you purchase may affect its durability.

(7) Storage

Will you need to store your Sliding Window Stopper? If so, you should consider the size and weight of the Sliding Window Stopperto make sure that it can be stored properly. Also, give some consideration to the type of climate in which your Sliding Window Stopper will be stored.

(8) Customer Ratings

Customer rating is one of the best criteria for choosing an Sliding Window Stopper. It is hard to know exactly how an Sliding Window Stopper will perform until you get it home and try it out.

(9) Warranty

Make sure the Sliding Window Stopper you are considering is backed by a good manufacturer’s warranty. If it isn’t, you might be better off with another ones.