User Manual Best WC35IQ90SB 36" Dune Stainless Steel Wall Mount Chimney Range Hood

"Hoods need to be designed around the size and strength of the range," Wellnitz says. "A properly sized hood must cover the full width of the range and at least 50 percent of the front burners." A vent hood's strength is quantified by the amount of air it moves, represented in CFMs (cubic feet per minute).