She saw them through the clear panel of the door before they noticed her standing outside it.

Through the thin wooden panel, he could hear the door open.

But no bullets ripped through the panel to cut him down.

I went to the hall and took a look through the panel.

That didn't work; his hand passed through the panel without impact.

He carried the body through the panel, and it closed after him, leaving a solid wall.

He was able to glimpse the sky through the panel also.

She wiped the tears away with both hands as though he could see through the panel.

The points of several nails stuck out through the panel.

I saw his foot come through the panel and he kicked again.