THE BEST SIDE OF FLYER PRINTING

I just have a question regarding how to buy on your own platform. What is the measurement of an A5 document (half of an A4) in your platform? I choose to buy a double sided flyer. I need to verify that "Whole Shade" to the again side signifies this? Thank you! one Respond toDid a 2nd print of flyers with the precise specs. Nonetheless the 2nd print