#1.I have installed patio door sets and the doors in that photo are 72"X80".
#2.I hand sew civil war flags from scratch and I can tell you from experience.
#3.If that flag is 6X10 it would take up the whole area of the room in which the photo was taken.
#4.Who in their right mind lays an authentic flag out on the carpet?
#5.Do you actually think that if that was an authentic flag, it would be laying out on someone's floor and being sold for "99.00$" on E-bay??????
If you wanna pay that for something that's not what it really is then by all means be my guest, but before you do go get out a tape measure, find you a set of patio doors and measure those doors, not the doors in a photo you printed off.
Just trying to help is all.