the decision as to which ventilation hood and duct system to use ultimately is based on a number of factors, especially the conditions locally, and should be made with knowledge of all the factors in consultation with a professional.
Repeat this setence, but with the correct capitalization.
The decision as to which ventilation hood and duct system to use ultimately is based on a number of factors, especially the conditions locally, and should be made with knowledge of all the factors in consultation with a professional.