This should be a very easy question. I'm trying to finish one room in the basement, about 11' x 8'. The ceiling is about 6'9" - 6'10". There are 2 air ducts on the ceiling coming from the furnace. From the bottom of the duct to the floor measures 6'2" (my height). I would like to add at least 3" so I can stand up properly.
-The ducts measure 7" x 18" (126 square inches).
-I figure I can replace them with ducts which are 4" x 31.5" (126 square inches) so I can stand up in the room.
Then I can finish off the room by insulating/drywalling the ceiling, and covering or painting the vents that stick out.
I would like to know how much it would cost to replace and what is the best course of action.