Posters output on Polypro material can be mounted on foamboard up to 45" x 60". Various mounting boards are subject to availability. Black 1/4-inch JetMount is the the mounting board of choice in stock. Because it is lightweight yet strong, it is ideal for trade show displays while saving money on shipping.
For conservation, choose an archival acid-free art paper. If mounted giclee prints are requested from Reactive Imaging, acid-free foamboard may be requested. White 3/16" acid-free board, is not quite as stiff as JetMount but is usually intended as a backing within frames. If shipping long distance is anticipated, it may be more advantageous to have prints rolled and shipped in tube for mounting by a local professional framer.