This handy adjustable window stop is made to work well with double-hung and horizontal sliding window styles and allows parents to control just how far a window opens. Made of highly durable plastic, it mounts to the window frame with Velcro adhesive and measures 3/4" wide by 3" tall.
No damaging hardware needed to install
Keeps windows from opening any wider than a safe 4 inches
Helps keep intruders out while allowing fresh air in.
Wedge can be adjusted to wanted height so that window can be opened to your specifications