The 8 x 12″ Photo Drying Book from Delta 1 is a convenient means for drying up to 21x 8 x 10″ prints at a time without staining or scratching. The blotter book is constructed from heavyweight 120 lb low-lint paper that is acid-free, has a neutral pH, and chemically pure so not to affect the archivability of your prints for up to 50 years.