The only window was the heavily barred one set into the door.

Along the second and third floor levels I had seen small windows heavily barred.

It was a very large room with heavily barred windows and a door.

Three doors led off from the room, one heavily barred.

He won't have any luck; this house is certainly heavily barred.

The windows on the ground floor offered no help - all were heavily barred.

There was a small chimney, heavily barred across, a few feet within.

Small windows without glass were heavily barred to prevent escape.

They were high above the floor and heavily barred.

He stood and peered out a heavily barred basement window set level with the street.