All frames and glass panes of this graphic art are of the highest quality. The wooden frame is cleanly crafted and joined at the back. The graphic art is 2mm thick, professionally made and frame the picture cleanly and neatly. The picture frames measuring 40cm x 30cm and 30cm x 20cm are supplied with real glass. For the dimensions 60cm x 40cm and 80cm x 60cm, a high-quality 2mm thick acrylic glass of quality level. This quality level of acrylic glass is in no way inferior to conventional glass. It does not yellow or become milky when exposed to UV radiation and other environmental influences. This glass was mainly chosen for the larger frames to reduce transport damage. On the back of each frame, there are hangers for horizontal or vertical suspension.