Archival Polyester Storage Envelopes

These 4 mil caliper polyester envelopes are made with inert DuPont Melinex 516 which is approved for archival use by The Library of Congress.  The edges are sealed using the Minter sonic sealing method, which makes for a much smoother and straighter seal than heat welding methods.  The envelopes are open on the top short side and sealed on the other three sides.  Use with photos, negatives, or important papers that you want to safeguard.

The measurements listed are the inside dimensions of the envelopes.