Why are some window bars curved at the bottom

In fact, window bars with no release mechanism have contributed to tragic fire-related deaths, especially in older homes or low-income housing where safety codes may not be enforced.

🚒 The Solution: The “Egress Curve” (or Kick-Out)

The curved bottom bar—often called an “egress curve,” “rescue arch,” or “kick-out”—creates a small, open space at the base of the window that allows:

A person to kick out the lower section in an emergency
Firefighters to easily pry or cut through the opening for rescue
Occupants to squeeze through the gap if the upper bars remain intact

💡 Key point: This design still deters intruders—because the curve is at the bottom, which is hard to access from the outside—but provides an escape route from the inside.

📏 How It Works (And Why It’s Effective)

The curve typically creates a 6–12 inch opening at the bottom center
It’s structurally sound—the arch actually strengthens the bar against prying
It complies with modern fire safety codes in many cities (like Los Angeles, Chicago, and New York), which require all window security bars to have a quick-release mechanism or egress design

🚨 Important: Even with a curve, many jurisdictions now require bars to have an interior quick-release latch that can be opened without tools or keys.

🔧 Other Safety Features in Modern Window Bars

Quick-Release Latches: Interior levers or screws that let you remove the bars in seconds
Hinged Bars: Swing open like a gate for full access
Breakaway Bolts: Designed to shear under pressure during rescue

✅ Always ensure your window bars meet local fire code requirements—your life could depend on it.

Final Thought: Security Should Never Come at the Cost of Safety

That gentle curve at the bottom of window bars is a quiet testament to smart, human-centered design. It balances protection from outside threats with freedom to escape inside danger.

So next time you see those curved bars, don’t just see security—see safety, foresight, and care built into the metal.