The most beautiful collection of puzzle based primarily on new famous artists paintings such as Dianne Dengel, Dominic Davison, Sung Kim and more. . The thickness of the pieces is 1.8mm and apply perfectly with each other. Each box also includes a convenient stand you use to hold the box upright to see it better. The dimensions in complete puzzles are. 260xl pieces = 33cm x 48cm, 500 pieces = 33 cmx 48cm, 1000 pieces = 48cm x 66cm, 1500 pieces = 60cm x 85cm, 2000 pieces = 96cm x 66cm, 3000 pieces = 85cm x 120cm.