Ultra-Pro 3-Pocket Pages (4X6) - 100 Pages per box (Quantity of 1) [Misc.] Ultra-Pro Protective Pages 100 Pages per box Holds three continentalsize postcards or 4" x 6" photos with 1 displayed horizontally and 2 displayed vertically. Alternatively, if you put the postcards or photos in the pages backtoback, each 3pocket page will hold six items. . Pages are clear on both sides. Sheet size: 81/2" x 113/8". Pocket size: 41/8" x 61/8". Archival Quality. AcidFree. PVCFree. Super Clear. Very Strong. Prepunched holes. These pages fit in our standardsize albums and other 3ring binders