This is a strange video. Why is a joist bay being used as a duct space for HVAC? That is clearly joist on the right and left and the subfloor above has nails sticking out of it. I question how legit this video is and your company.
@gmacsteamservices10 ай бұрын
Are you familiar with return duct?if you know the what is your asking for ,you can answer them at the same time👌