For Marylanders please post your hood CFM /makeup air requirement
In my ongoing renovation planning noone has ever mentioned makeup air - architect and 3 bidding contractors - for a clearly specified 600 cfm hood. Today, I see in a craigslist ad for a vent hood that "Maryland requires makeup air (MUA) over 400 cfm". When queried, none of the above have ever had to deal with MUA. I live in Baltimore County.
So I was hoping to get a survey of Marylanders,. From the postings I could find, it looks like Montgomery county does enforce the MUA requirement over 400 cfm. If you did have to have MUAthanks so much