Contractors....HVAC ductwork question

WELL, that's a question of a different color on FABO!!!! LOL

Question is, square duct or round? I think you mean its square. is this intake or supply?

Remember if you are doing a intake duct, as long as its a clear way, making the "area" smaller, it will increase the intake power, and if you do that to the supply, it will make the outward pressure seem more as you walk past. I think you'd be OK, BUT be sure to check with your local building inspector or Building Code inspector, to make sure its up to snuff with them, BEFORE you do anything. Those "codes" are there, for a reason......

ALWAYS when doing HVAC, SAFTY FIRST, and FOREMOST!

Asking questions to these people should NOT cost a cent......IF they insist to inspect, then it might cost a couple bucks, BUT, BEFORE you go to their office, go to the local supply house, (place of parts purchased) Like Home Depot, OR Lowes, they can tell you, what the codes for such is, IF you have educated persons manning that area of the store.....WHICH if they are, and can help you, with the questions on your local codes, and then you wouldn't have to or need to go to the local building codes office at your town hall.