Adjustable Sliding Window Stopper Lock

Secure Sliding Windows in Seconds

Improve the safety of your home with this Adjustable Sliding Window Stopper Lock. Designed for standard sliding window tracks, this compact device provides an additional layer of security without drilling, tools, or permanent installation. Constructed from durable zinc alloy, it offers reliable resistance against forced opening while remaining easy to operate for everyday use.

The stopper clamps directly onto the window rail and is tightened in place using the integrated turn knob. Once secured, it blocks the sliding motion of the sash to help deter intruders and prevent windows from being opened beyond your chosen position. Its adjustable design allows you to set a narrow gap for ventilation or keep the window fully closed. When not needed, simply loosen the knob and remove or reposition the lock on another window.

Why It's a Smart Choice

• Tool-free installation - Attaches directly to the sliding track with a hand-turn knob; no screws, drilling, or special tools required.
• Adjustable opening control - Set how far the window can slide to balance airflow with safety, ideal for homes with children or pets.
• Durable zinc alloy body - Solid metal construction for long-lasting use on frequently opened and closed windows.

FAQ

Q: What type of windows is this compatible with?
A: This stopper is designed for horizontal or vertical sliding windows with a visible track or rail. It is not suitable for casement, awning, or hinged windows.

Q: Does it require any permanent installation?
A: No. The lock clamps onto the window track using the built-in knob. It can be installed, removed, or moved to another window in seconds.

Q: Can I use it to keep a window slightly open for ventilation?
A: Yes. Position the stopper at the desired point on the track to limit how far the window can open while maintaining a controlled gap.

Q: What are the dimensions?
A: The stopper measures approximately 6 × 3.5 × 2.3 cm, making it compact yet sturdy enough for everyday security use.