One Popular Use: Flower Boxes
One of the most charming uses for outward-curving window grilles is supporting plants and flower boxes.
In homes and apartments with little or no yard space, windows may be one of the few places available for growing flowers or herbs.
The curved portion of the grille can create a convenient space for a planter, depending on the particular design and how securely the planter is attached.
Imagine a row of windows decorated with geraniums, ivy, herbs, or other plants.
The greenery can completely change the appearance of an otherwise plain exterior.