Hardware
Adjustable Aluminum Sliding Window Locks — 6-Pack Security Stops
Product description
Check track dimensions before ordering: these window stops are built to work with many vertical and horizontal sliding windows and patio doors. Confirm your window track height is greater than 0.48 inch (1.2 cm) and the track’s usable width is less than 0.61 inch (1.55 cm). Depending on the profile of the frame, you can mount the locks on either the inside track or the center track.
Security-focused construction: each stop uses a two-piece lock-and-key arrangement to keep unauthorized people from releasing the stopper from outside. The body is made from thickened aluminum alloy for long-lasting durability and to resist bending. There are two fixed mounting holes in the lock body to give a firmer hold, a widened contact area to reinforce the barrier when the window is opened, and a protective washer to prevent scratching of the frame.
Where to use them: these adjustable sliding window locks are suitable for homes, apartments, hotels, offices and rental units. They let you restrict a sash to a partial opening or lock it fully shut, which helps keep children and pets safe and deters casual break‑in attempts.
No-drill installation: installing the stops requires no drilling or extra power tools. Set the unit in position on the track, place the protective spacer, then tighten the screw to clamp it in place. Each set includes a vertical key for center-track mounting and hex wrenches for side installations so you can reposition or reuse the lock as needed.
What’s in the box: six adjustable window locks, six hex (Allen) wrenches for mounting, six protective gaskets/spacers to prevent damage to the track, and one vertical key designed for use when mounting to a center track.
Materials and sizing recap: heavy-duty aluminum alloy construction with metal fasteners and protective plastic washers. Designed for tracks taller than 0.48 in (1.2 cm) and narrower than 0.61 in (1.55 cm). Compatible with most standard sliding sash profiles where the ledge thickness falls within those limits.
Pros
- Durable thickened aluminum alloy
- No-drill, reversible installation
- Includes keys, hex wrenches and protective gaskets
Cons
- Not suitable for very narrow or very wide tracks
- A bit fiddly to remove and reinstall frequently
- May require a longer Allen wrench for deeper turns
VerdictA practical, heavy-duty option for limiting how far sliding windows open. These aluminum stoppers come in a six-piece set with protective gaskets, hex keys and a vertical key for center-track mounting. They’re easy to fit without drilling, provide adjustable stopping positions, and add a tangible layer of childproofing and intrusion resistance. If your track dimensions match the stated limits and
Reviews
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Ahmed Ibrahim 5/5
Excellent Product
Useful and very good quality.
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Aunty Kristin 4/5
Effective but a Bit Fussy
They secure the windows well, but I find it annoying to remove and refit them every day. I also needed a longer Allen wrench to get more rotation when tightening.
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Angela Dawson 5/5
Ideal Window Guard
Exactly what I needed to limit window opening.
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Jose 5/5
Does What It Says
Performs exactly as advertised.
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Katie Higashi 5/5
Heavy-Duty and Practical
Solid build that feels like it would resist forced entry. I like having the key option and installed one on both the top and bottom tracks.
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MOMO2411 5/5
Very Functional
Super useful—one of my windows wouldn’t close fully and this lets me leave the house without worrying. Sturdy, includes plastic pads to protect the track, and the tightening keys are solid.
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Rita Martin 5/5
Instantly Safer
Very easy to use and gives me a lot more peace of mind.
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Candy Lou Solis 5/5
Easy Upgrade for Renters
Quick, drill-free install. They sit securely and stop the windows from being opened from outside. Adjustable and renter-friendly—adds real peace of mind.
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Samantha reyes uvario 5/5
Solid Childproofing Option
Good for child safety or basic home security. They clamp to the ledge to stop the sash and can be set to allow a fixed gap. Sturdy metal and the multipack offers good value.
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Angela 5/5
Great for Caregiving Safety
I bought these because my mother with Parkinson’s dementia sometimes opens second-floor windows. They were easy to fit on vertical tracks, adjustable to the opening I wanted, and she hasn’t figured out how to remove them after weeks of use. Highly recommend for caregivers and families.
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Alejandro T. 5/5
Tough and Discreet
Very sturdy and unobtrusive. Not easy to remove, which makes it excellent for aluminum window security.
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Javier Calero Lomelín 5/5
Works as Expected
They do what I hoped—practical and easy to use.
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Abdullah 5/5
Top Quality
High quality and works exactly as intended.
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