Verdi Duralong 4 Cover Cotton Envelope Natural White 90 grams 45×110 mm (pack 100 pieces)

“Verdi” four-flap envelopes are made from a single sheet of Duralong Cotton paper with no adhesive. Duralong Cotton is 100% cotton, buffer-free, high purity and chemical-free paper. It is produced by a “round machine”; In this type of processing the paper is very porous and not over-pressed (calendered) to allow maximum air flow and prevent the formation of potentially harmful gases. “Verdi” four-wing enclosures make folding easy, ideal for storing glass negatives. Photographic glass plates can be stored safely without risk of print marks and can also be viewed without removing them from their protective coating, simply by opening the flaps and leaving the plate safely untouched on a flat surface.