4x6 Plastic Photo Sleeves - 4 Vertical Pics Per Page - 165 3-Ring Binder Pages. Will hold 1,320 photos! Condition is more pre-owned than used. These pages came with DesignOvation photo albums that I ordered from Overstock and used different photo pages in. The pages are described as acid free and photo safe. Each stack has 55 pages in it. 55x3=165 pages. Pages measure about 12 1/2 by about 9 1/2 inches. There are four spaces on the front and back that hold 4x6 photos, so 8 photos per page. 165x8=1,320 photo slots total. On one of the packs, the paper binding tore and has been taped. All 55 unused pages are in that pack. Smoke free home.