This is a neutral pH, non-buffered white paper. It is free of lignin and sulfur. Usual grain direction is 36 in the 36 x 48 sheets, 60 in the 42 x 60 sheets, and 72 in the 48 x 72 size. It is sold by the sheet. Non-buffered folder stock is widely used with photographic and botanical collections where a neutral pH is considered critical to the long-term preservation of collections. It is ideal for folders and for use as a light-weight support sheet. Passes PAT.