If I fold an A4 paper length way half, what size would I call that? - Quora
Mock up flyer pamphlet brochure design A4 size half-folded (A5) paper layout space for template illustration mockup, flat lay on wood table from top view Stock-Foto | Adobe Stock
Guide to Paper Sizes | Snap Printing
List of paper sizes | Page dimensions from A4 to Letter & Demy Quarto