Hahnemühle Photo Rag® Book & AlbumDouble sided Hahnemhle Photo Rag Book & Album is perfectly suited for book and album production. Grain direction is predetermined for each cut sheet size and marked on the packaging. For all bookbinding techniques, the grain direction needs to run parallel to the spine of the book. Therefore: Short grain sheets need to be bound on the short side. Long grain sheets need to be bound on the long side. Available Sizes Size Sheets Roll Product Code 8. 5" x