| 摘要 |
Interior ventilation adjustment device including a first seat which is arrangeable in a building partition and which is provided with a first opening communicating with the building exterior and a second opening communicating with the building interior. The device further includes a pivoting shutter element for closing said second opening actuated by a lever accommodated in a box-like structure which exclusively opens to the building interior. The shutter element is accommodated in the first seat so as to be out of sight from the building exterior.
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