A Double Parallel Fold is one sheet of paper folded in 50 %, then in 50 % again, to form two parallel folds that go in the exact same way. This provides you 4 back and front panels you can put info on. Uncoated paper is not difficult to put https://flyer-printing13456.angelinsblog.com/27533871/5-simple-techniques-for-flyer-printing