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discover an ultra-efficient metal muffler for simple soundproofing of your ventilation ducts, for flexible hose diameter 315mm length 900mm, gain decibels with this muffler winflex ventilation .
discover an ultra-efficient metal muffler for simple soundproofing of your ventilation ducts, for flexible hose diameter 315mm length 900mm, gain decibels with this muffler winflex ventilation .
here's an example ofhow to install my silencer in my ventilation ducts.