If i remember correctly I would say it is slightly smaller than 3'x5'...I couldn't really measure it since it was on the wall of a family restaurant, and as I was taking the picture a family was trying to sit at the table right in front and blocking the view of it. I wanted to get a better picture of the description that was in the bottom right corner...in summary it said it was from the unit shown on the flag, and that it was from 1862. Up close the workmanship looked very rough, and nowhere near as nice as a similar flag with the same marking that was listed in another museum.