There is an empty space above this inner pane and a top sheet of glass in front.
The two inner panes, made of aluminosilicate, ensured no cabin air leaked into space.
The bomb bounced off the inner pane, flaming harmlessly against a red brick outside wall.
On the inner pane of the door, set within the heart of the wood, was a flat panel one span high and two wide.
The inner two panes, which were made of aluminosilicate, made up part of the module's pressure vessel.
Large temperature differences between the inner and outer panes stresses the spacer adhesives, which can eventually fail.
They cut through the paper pasted over the cracks, knocked off the bolts, opened the inner pane of the double windows.
The inner pane cracked; he felt himself falling, and clutched hard at the framework.
Then he repeated the operation on the inner pane, before reaching in delicately and disengaging the window-lock.
"I looked up and saw the whole inner pane, which is five feet high and one foot wide, had totally shattered inside the screen," she said.