The grills on each side of the entrance to the main hall were open; that is, the casement windows were thrown back.
"The Voice in the Fog"
Harold MacGrath
They don't use the grills, because there's no need to, with the hotel kitchen so handy.
"Sunshine Sketches of a Little Town"
Stephen Leacock
Massive but graceful granite columns adorned its front, while within it was partitioned off with polished marble and ornamental grills.
"The Inside of the Cup, Volume 5"
Winston Churchill