LARGE Postcard 'L' Sleeves. Also use for Photos & Prints. 4-1/4 x 6-1/8". 4 mil POLYESTER (Mylar). Sealed on two adjacent sides.

LARGE Postcard & 4 x 6" Photo 'L' Sleeves
4 mil ARCHIVAL POLYESTER
4-1/4 x 6-1/8" (outside dimensions)

These L-Seal Sleeves are made from crystal-clear archival Polyester, approved by the Library of Congress for INDEFINITE STORAGE. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints/postcards.