A listing for a open metal cylindrical object called "Aprilaire 6110 10" Round Mechanical Barometric Pressure Relief Bypass Damper"

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[–] [S] 2 points 4 months ago

now i don't know what this is either but the name of the item sounds promising

A black rectangular object seemingly made of plastic with a black tube attached. It's kinda shaped like a DSLR camera. The title of the listing is written in capital letters. It reads "MAN. ABSOLUTE/ BAROMETRIC"

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