US Art 11x14 Inches .040 PETG, Clear Styrene/Plexiglass Facing for Picture Frame - Set of 2 This acrylic sheet fits a 11x14 Inch Frame. Set Of 2 Acrylic is a great upgrade from standard styrene plexiglass and is a perfect choice for frames 11x14 inches and above that are too large for glass. Acrylic material is a high quality, crystal clear, durable upgrade from styrene plexiglass. US ART .040" Clear Acrylic Facing for Picture Frame Poster Frame Acrylic sheeting provides added protection and crystal clear clarity for your print.