Hoʻolālā ʻia ka pahu alumini acoustic ea alumini no ka ʻōnaehana ea hou a i ʻole ʻōnaehana HVAC, i hoʻopili ʻia ma ka hopena o ka lumi. No ka mea, hiki i kēia acoustic air duct ke hoʻohaʻahaʻa nui i ka walaʻau mechanical i hana ʻia e nā mea hoʻoulu, nā mea pā a i ʻole nā ea a me ka leo makani i hana ʻia e ka ea kahe i loko o ka pipeline; I hiki i nā lumi ke noho mālie a ʻoluʻolu i ka wā e paʻa ai ka ʻōnaehana ea hou a i ʻole ʻōnaehana HVAC. Pono ka ʻea acoustic no kēia mau ʻōnaehana.