Archival acid-free buffered envelopes ideal for the long term storage of photographic negatives.
Made from 100gsm Heritage Woodfree Paper which is lignin free, acid free and buffered to pH 8.5 with calcium carbonate.
All our envelopes are made using an acid free, water based acrylic adhesive.
Passes the P.A.T.
Envelope size: 70 x 255mm
To fit: 35mm Negatives
Opens on the short side.