This is a pack of 10 Pioneer STR Refill Pages for the ST-400 Photo Album. They are designed to display and protect 40 4x6" photos. The 2-up style pages can display two horizontal images per side.
The 10 clear, side-loading pages protect your photos from dust and fingerprints. The 3-ring binding has three holes spaced 2.5" apart and enable the open pages to lay flat for quick loading and optimal viewing. The pages are acid-free for long-term archival photo storage.