| 摘要 |
A ventilation apparatus 26 is provided for mounting in a garage 10 door. The ventilation apparatus is provided with a rectangular shaped base support member 30 having an opening 40 formed therein. A first rectangular shaped tracking member 54 is aligned in first portions of the opening 40 in the base member 30. The ventilation apparatus 26 is also provided with a first transparent member 66 which is coupled in the first tracking member 54. A second rectangular shaped tracking member 56 is aligned in second portions of the opening 40 in the base support member 30. A second transparent member 82 is mounted for slidable movement in the second tracking member 56. This allows the second transparent member 82 to be moved to a position to cover the second portions of the opening 40 in the base member 30 as well as be moved to a position so that the second portions of the opening in the base member are uncovered.
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