Photo Canvas Paper, Acid-free Archival Matte, Bright White, 21mil, 450gsm., 8.5" x 11", 6 Sheets High quality acid-free and OBA-free matte museum fine art canvas. This unique 21 mil thick, 450gsm heavyweight high quality canvas is the most archival canvas available. Award winning canvas products designed for museum fine art and Photographic printing, and made in USA. Excellent true color saturation for reproducing your artwork and photography. Inkjet printable and suitable for framing and wrapped canvas. Print your photos on canvas yourself, or order your personalized photos on canvas from Photo Canvas Land.