There was a window on each side, but both were covered by shutters and iron grilles, and the only exit seemed to be the stairs.
"The Gray Phantom's Return"
Herman Landon
The house, with its thick white walls, and windows protected by grilles, confronted them, holding its many secrets.
"The Way of Ambition"
Robert Hichens
And stout grilles of bronze barred every window on the level of the street.
"Alias The Lone Wolf"
Louis Joseph Vance