Ultra-Pro 4-Pocket Pages (Postcards) - 100 Pages per box (Quantity of 1) [Misc.] Ultra-Pro Protective Pages 100 Pages per box Holds 4 standardsize vintage postcards or some trading cards with both sides displayed, or 8 postcards or cards inserted backtoback (we prefer to display our postcards so that we can view and read the backs). . Pages are clear on both sides. Sheet size: 8" x 113/8". Pocket size: 33/4" x 51/2". Archival Quality. AcidFree. PVCFree. Super Clear. Very Strong. Prepunched holes . These pages fit in our standardsize albums and 3ring binders