Coated for Printing on BOTH sides Famous Institute Certified Museum Level Archivability 320 gsm 17mil 100% Cotton Rag Acid & Lignin Free Archival Museum Quality Compatible with all Inkjet Printers 11" x 17" 50 Sheet Box Ultra Smooth Matte Surface Famous Institute Certified Museum Level Archivability NO Optical Brighteners 100% Cotton Rag 320 gsm 17 mil Coated for Printing on BOTH sides Acid & Lignin Free Archival Museum Quality Water Resistant / Instant Dry