Pinit 16 x 20 'Folder' Sleeve. 20-1/4 x 16-1/4". 4 mil POLYESTER. Sealed on one long edge. SKU: S2016F (0)No Reviews yet Add to Shopping Cart Details 16 x 20 'FOLDER' Sleeve 20-1/4 x 16-1/4" 4 mil Polyester (Mylar) Sealed on one long side (20-1/4"). • Crystal-clear archival material. • Approved... Details Back Details16 x 20 'FOLDER' Sleeve 20-1/4 x 16-1/4" 4 mil Polyester (Mylar)Sealed on one long side (20-1/4").•Crystal-clear archival material. • Approved for Indefinite Storage by the Library of Congress. • Passed the Photo Activity Test (P.A.T.) Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review