Polyester 'L' Sleeves for 16 x 20" Photos, Prints & Posters. 16-1/4 x 20-1/4". 4 mil POLYESTER. Sealed on two adjacent sides.
Details
16 x 20" 'L' Sleeves
4 mil ARCHIVAL POLYESTER
16-1/4 x 20-1/4"(outside dimensions)
These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4