Instantly lock sliding windows and doors - no drilling or tools needed
Place on window or door track to lock shut or allow partial-opening then just tighten thumb screw
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" maximum track-width
Heavy-duty extruded aluminum won't rust or corrode; sold individually, order in any quantity
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.