Baby Proof Windows

Window falls send thousands of children to the emergency room every year, and they can happen quickly and quietly. Here’s how the CPSC and National Safety Council recommend babyproofing windows in your home.

Window stops or window guards (with a quick-release mechanism if the window is also a fire escape route), child window locks for windows within reach, and cordless — or inaccessible-cord — window coverings if you have blinds or curtains with cords.

Move Furniture Away From Windows

The CPSC recommends keeping beds, couches, chairs, and other climbable furniture away from windows, since furniture placed nearby gives children an easy way to reach the sill and climb up.

Install Window Stops So Windows Open No More Than Four Inches

Window stops are simple devices that limit how far a window can open. The CPSC’s guidance is specific: install stops so windows open no more than four inches — enough for airflow, not enough for a child to fit through.

Add Window Guards Where Extra Protection Is Needed

For windows above the ground floor, window guards add a stronger physical barrier. If the window also serves as a fire escape route, choose a guard with a quick-release mechanism that an adult or older child can open easily in an emergency — window guards sold for this use are expected to meet the ASTM F2090 standard. If you rent, the CPSC suggests talking with your landlord about having guards installed.

Use Child Window Locks on Windows Within Reach

Child window locks add a layer of protection on top of stops and guards, keeping a window closed and locked when it isn’t actively being used for ventilation. Where possible, favor windows that are out of a child’s reach for everyday airflow, and keep others closed and locked.

Don't Rely on Insect Screens

Screens are built to keep bugs out, not to keep children in — they aren’t designed to hold a child’s weight and can pop out under pressure. The CPSC and National Safety Council are both direct on this point: never depend on a screen alone to prevent a fall.

Manage Blind and Curtain Cords Separately

Window coverings with dangling cords are a separate strangulation hazard, unrelated to fall risk. If your windows have blinds or curtains with cords, use cordless versions or products where the cords are inaccessible to children, especially in bedrooms and nurseries.

Window falls can happen in seconds, often while a child is briefly unsupervised. Stops, guards, and locks reduce risk, but they work together with — not instead of — active supervision, especially during warmer months when windows are more likely to be open.

Sources

This guide is based on the U.S. Consumer Product Safety Commission’s window-fall prevention guidance and the CPSC’s broader childproofing recommendations. These sources recommend window guards or stops, limiting openings to no more than 4 inches, keeping furniture away from windows, and never relying on insect screens to prevent falls.

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