Folding Options         Mailing Services         Common Sizes         Templates Listed below are our most common sizes to help you maximize your dollar, and your sheet size. If you need to be really different give us a call and we can do that too. Flat size = the size it will be once unfolded and laid out Flat. Finish size is the size you end up with once all folding is complete. 8.5x5.5 8.5x11 11x17 = 2 sheets of 8.5x11 25.25x11 = 3 sheets of 8.5x11 maps can be 18x24 = 2 sheets of 11x17 24x26 = 4 sheets of 11x17