12 x 12.1 inch (30 x 31 cms)16 x 16.1 inch (41 x 41 cms)20 x 20.2 inch (51 x 51 cms)24 x 24.2 inch (61 x 61 cms)28 x 28.2 inch (71 x 72 cms)32 x 32.2 inch (81 x 82 cms)36 x 36.3 inch (91 x 92 cms)42 x 42.3 inch (107 x 107 cms)48 x 48.4 inch (122 x 123 cms)54 x 54.4 inch (137 x 138 cms)