Wood Backed (.025″) thick is very strong and sturdy yet still has the flexibility to run through laser printers using the straight feed feature. There is wood on both sides which is perfect for announcements, menus, invitations, programs and more. You get to see the beauty of the wood on both sides. (.025″ Thick = 25 PT/414 GSM) Standard stocked sizes are: 5"x7", 8.5″x11″ and 11"x17". Sheets also come with grain direction options of Short Grain and Long Grain. Available Species are: Aspen, Birch, Cherry, Maple, Walnut and White Pine. For additional information, please visit our FAQ's Page.