| 摘要 |
Because of holes made through the protection board which prevents rain from coming into the room, outside air is able to come through. Therefore the board provides good ventilation and a good environment even when it is raining. As the ventilator on the board is designed to face the original window glass, raindrops can hardly come into the room. When the board is not being used, it is capable of being folded away on its hinges.
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