Windows and doors that slide open are a favorite entry point for criminals. They open & close silently and factory-installed locks & latches are often easy to defeat. This simple and reliable lock grabs onto window or door track and prevents further opening. Also lets you set maximum window-opening size – a great way to safeguard upper-level windows for children.
- Instantly lock sliding windows and doors – no drilling or tools needed
- Place on window or door track & tighten thumb screw; lock shut or allow partial opening
- Prevents window from being forced or pried open from outside; easy removal and reusable
- Fits most vertical or horizontal sliding windows & many sliding doors to 1/4″ track-rim width
- Heavy-duty extruded aluminum won’t rust or corrode