Helps prevent windows from being opened more than a safe amount for children.  Enjoy fresh air safely!

• Can be used on most double-hung sash windows, sliding windows and sliding doors
• May be positioned to prevent some or no opening of window
• Easily adjust opening gap by positioning device in desired location within track
• Comes in 2-pack
• Durable 
• Easily disabled if the window must be opened for cleaning or fire escape
• Discrete small design
• Meets ASTM F 2090-10 and IRC, Section R612.4 for window safety

 Installation

• Easy installation with 2 small screws either inside track or in front of track (in combination with stop which may be mounted on front of sash or door)
• For child safety, it is recommended any window be permitted to open more than 4 inches
• NOT for use on casement, awning or hopper-type windows
• Estimated time to install: 5 minutes
• Recommended tools/equipment: electric drill, 1/16 inch drill bit, #2 Phillips screwdriver or driver bit