12 x 17 inch (30 x 43 cms)16 x 22.6 inch (41 x 57 cms)20 x 28.3 inch (51 x 72 cms)24 x 33.9 inch (61 x 86 cms)28 x 39.6 inch (71 x 101 cms)32 x 45.3 inch (81 x 115 cms)36 x 50.9 inch (91 x 129 cms)42 x 59.4 inch (107 x 151 cms)48 x 67.9 inch (122 x 172 cms)54 x 76.4 inch (137 x 194 cms)