Why Some Window Grills Have a Curved “Belly” at the Bottom—and the Practical, Often Overlooked Reason Behind This Unusual Design Feature
Window grills are one of those architectural details most people pass by every day without really noticing. They blend into the background of buildings, quietly doing their job—protecting homes while allowing air and light to pass through. But in some places, you may have seen a version that looks slightly different: instead of sitting flat…