A 3,250 sq ft house with 8 foot ceilings has 3 return ducts. What size must the ducts be to handle 7 exchanges per hour with a flow of 350 ft/min? Round the answer to the nearer hundredth square foot.

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The Answer of A 3,250 sq ft house with 8 foot ceilings has 3 return ducts. What size must the ducts be to handle 7 exchanges per hour with a flow of 350 ft/min? Round the answer to the nearer hundredth square foot.

A 3,250 Sq Ft House with 8 Foot Ceilings Has