12 x 12.5 inch (30 x 32 cms)16 x 16.6 inch (41 x 42 cms)20 x 20.8 inch (51 x 53 cms)24 x 24.9 inch (61 x 63 cms)28 x 29.1 inch (71 x 74 cms)32 x 33.2 inch (81 x 84 cms)36 x 37.4 inch (91 x 95 cms)42 x 43.6 inch (107 x 111 cms)48 x 49.8 inch (122 x 126 cms)54 x 56 inch (137 x 142 cms)