Manufactured from clear, high density, 4 mil, chemically inert archival polypropylene, these economical album pages are available in a number of configurations to satisfy a variety of formats. Each is designed to fit a standard three ring binder including all of University Products standard size albums. Price is per package. Page sleeves are top loading. Pages hold 20 2" x 2" slides, sheet size 9.375" x 11.375".