| 摘要 |
Self-contained window units adapted for assembly into an oven door of the type having a vertical air passage for the flow of air by convection through the space between the front and back door panels, the window units having two glass panes, means holding the glass panes in spaced parallel relation and having openings therein defining an air flow passage between the panes aligned with the air passage through the door. Several modifications disclosed show various means of providing for easy removal of one or both of the panes for cleaning. |
