Got a question, I am going to be installing a hood system for heat removal only, no problem, I am going to mount the hood then run square duct to the mushroom exhaust fan, now my question is that I will not be going through roof but side wall exit , now that being said, when I exit the side wall , you guys think that I 45 then 45 to make a 90 then mount fan, or should I just do be 45 , just wondering , for cosmetics, I have seen both,
What is all ur guys and gals