For long or short term protection of valuable artwork and precious photographs. Archival and crystal clear 2mil polypropylene. Accepts mounted and matted artwork; perfect for home, gallery, and outdoor shows. Provides a professional finish to presentations. All bags up to 33cm x 48cm have a 0.6cm tolerance on both sides, and larger sizes have a 1.3cm tolerance. Bags are made to fit the sizes listed. 25-packs. Size: 30cm x 41cm .