Hi! All the files are in A4 format, I intend to upload a letter version, but don't know when. If printed without adjustment, all the cards are in exactly poker size (except Items cards, they are minicards). If the board isn't adjusted also, it will fit perfectly an A4 sheet and all the hexes will fit perfectly 25mm base miniatures.
If you want to print the rules also, it's in A5 format, so you can print a A5 booklet in one single A4 sheet (since it have 4 pages).
Hope it helped!