THE BEST SIDE OF FLYER PRINTING

I just have a question regarding how to purchase on your System. What's the measurement of an A5 doc (fifty percent of an A4) on the platform? I need to order a double sided flyer. I would like to substantiate that "Full Shade" over the back side means this? Thanks! one SolutionGone are the times once you had to sacrifice model to the sake of susta