These acrylic signs come with a sturdy wooden stand that'll keep the 3mm thick acrylic glass in place. Choose from two sizes: 5.1" x 7.9" (13 x 20cm) and 7.9" x 11.8" (20 x 30cm). .: Material: 3mm thick acrylic glass .: Two sizes: 5.1" x 7.9" (13 x 20cm) and 7.9" x 11.8" (20 x 30cm) .: Blank product sourced from Germany