ventilating grill in a sentence

1. The plans provided for high set windows ( presumably to facilitate the privacy of the court ) and lowset ventilating grills with existing court room furniture to be reused in the new room.
2. When the fan came on again, " years of dust and soot and debris _ debris from the ages _ rained down " from the ventilating grills seven or eight feet from the floor, Ms . Anders said.
3. It's difficult to find ventilating grill in a sentence.