Archival acid-free buffered envelopes ideal for the long term storage of paper, prints, photos and 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.
To fit 4x5" Photo Box
Envelope size: 110 x 133mm
To fit: 4 x 5″
Opens on the short side.