His hands shaking, Julian peered through the ventilation grill at the white corridor several meters below.

There's a concealed microphone in the ventilation grill above your window.

Otherwise, home is a sleeping bag over a ventilation grill.

I tapped at the vanes on the ventilation grill until it blew toward the altar.

The ventilation grill was next to the ceiling, and could be blocked with a strip of the towel, on its roll by the sink.

But those remains were left in a special room with no doors or windows, only ventilation grills.

Or it would enter the house through ventilation grills nestled in the eaves.

It was roofless, its outer walls coming up to within six feet of the ventilation grill.

"They listen to us," he said, pointing to a ventilation grill on his wall.

He climbed onto the toilet tank and covered the ventilation grill, stuffing the sheet into the slits.