Beauitful Colorful Poster 20" x 20" HD! This premium matte horizontal poster is made with museum-grade paper (175gsm fine art paper), and are the perfect means to bring any digital artwork into real life as stunning décor. Frame Option :Square Poster Frame with High Definition Plexiglass, This premium matte horizontal poster is made with museum-grade paper (175gsm fine art paper), and are the perfect means to bring any digital artwork into real life as stunning décor. .: For indoor use onlyPrint your art on exhibition-ready paper and show or sell it to the world. This premium matte horizontal poster is made with museum-grade paper (175gsm fine art paper), and are the perfect means to bring any digital artwork into real life as stunning décor.