Opaque Envelopes – U-style
These ageing resistant, U-style envelope enclosures have especially been developed for archiving photographs, microfiches, glass plates and film negatives. The envelopes are available with or without an alkaline buffer, in natural white or white coloured photographic archival paper. The envelope opening is on the longer side. Both, the paper and glue have passed the Photographic Activity Test (PAT) in accordance with ISO 18916. Other sizes on request.