Accordion fold (4 panels) – this folding selection types a zigzag sample and it has four alternating panels on each side. Double parallel fold – this fold alternative makes four panels by folding the paper in half after which in 50 % all over again, parallel to the first fold. https://flyer-printing35566.blog-a-story.com/21685941/flyer-printing-can-be-fun-for-anyone