Four flap folders are ideal for storage of sensitive flat objects. Handling is minimal: the four flaps are closed after the object is placed on the inner surface of the four flap folder. Four flap folders can be stored upright or lying down in archival boxes.
Four flap folders
Seamless, four flap folder enclosures folded from a single sheet of either buffered, natural white coloured museum paper or in unbuffered, opaque photographic archival paper. These folder enclosures are suitable for archiving glass plates, valuable photographs and negatives.» to the product