Window & Sliding Door Security Key Lock Restrictor

Secure, Controlled Ventilation for Windows & Sliding Doors

This window and sliding door security key lock is designed to help you control opening distance while adding a reliable layer of protection for your home. Made from sturdy aluminum alloy with a clean silver finish, it clamps directly onto most window and sliding door tracks to restrict movement and reduce the risk of forced entry or accidental falls.

Measuring approximately 3 x 2.45 cm (1.18 x 0.96 in), the compact design is discreet yet effective. The lock is tightened onto the track using the supplied key, allowing you to set how far a sash or sliding panel can open. This makes it especially useful in homes with children, upper-floor windows, or street-facing sliding doors where controlled ventilation and safety are equally important.

Why It's a Smart Choice

• Enhanced security - Limits how far windows and doors can slide, helping deter intruders by reducing the opening gap they can work with.
• Child safety - Acts as a restrictor to help prevent children from opening windows wide enough to climb or fall through, while still allowing airflow.
• Easy, tool-light installation - No complex fitting into frames; simply position on the track, tighten with the key, and adjust or remove as needed.

FAQ

Q: What types of windows and doors does this lock fit?
A: It is designed for most horizontal sliding windows and doors with accessible tracks where the clamp can grip securely.

Q: Can I still open the window for ventilation?
A: Yes. You can position the lock to allow a limited opening distance, providing fresh air while maintaining a restricted gap.

Q: Is drilling required for installation?
A: No. The lock clamps onto the track and is tightened with the key, so no drilling into frames is typically necessary.

Q: How many locks do I need per window or door?
A: One lock is often sufficient for smaller openings, but using two (top and bottom) can offer additional stability and security on larger doors.