The flow of air in a duct should stay less than 490 ft/min to keep the air flow from being too noisy. The dining room of a house is to have a flow of 150 cu ft/min to have proper air exchange. What should be the smallest duct area going to this room? Round answer to the nearer thousandths sq ft.
Fill in the blank(s) with the appropriate word(s).
0.306 sq ft
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