Polyprotec/Polypropylene Protective Sleeves for Postcards - Choose Qty and Size
Sizes 3 and 4 are Polyprotec, other sizes are Polypropylene. All are Acid free and Archival safe . Size 0: 6" x 4" External. internal size = Approx 5.75" x 3.75" (146mm x 94mm).