What ducting size and performance can I expect from the Kenmore 233 range hood?
Kenmore 233 range hoods perform efficiently even with long duct runs. For example, 200 feet of 7-inch round ductwork will function at approximately 80% airflow — refer to the equivalent duct length chart for your specific system configuration. (Page 2)
From the official Kenmore 233 Range Hood manual, page 2
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