Those gracefully curved bottoms on certain window security bars—often seen on ground-floor windows in homes, apartments, or commercial buildings—aren’t just for looks. The curve (sometimes called a “swoop,” “arch,” or “radius bottom”) serves several practical and safety-related purposes:
✅ 1. Prevents Water Pooling and Rust
- Flat-bottomed bars can trap rainwater, snow, or condensation along the base.
- Standing water leads to rust, corrosion, and structural weakening over time—especially on steel or iron bars.
- A curved or arched bottom allows water to drain off quickly, extending the life of the bars and the window frame.
✅ 2. Makes Cleaning Easier
- Debris like leaves, dust, or pollen can collect in the crevice where flat bars meet the sill.
- A smooth curve eliminates sharp corners, letting rain or a quick hose-down wash everything away.
- No hidden nooks = less maintenance and fewer pest habitats.
✅ 3. Deters Climbing (Security Feature)
