Unfortunately we cannot print double sided on any of our print media. This is due to our print process being large format inkjet printing, each media type is fed one way off of a large roll through giant ink jet printers that can only print on one side of the media. The media cannot be fed through a second time to print on the other side as inkjet media is coated on only one side for printing.
True 'double-sided' printing is typically done in offset printing by commercial print houses with special double coated papers in large quantities. Double sided printing is not typically available for short run or small printing jobs because the print processes are different.