Carrie Underwood Poster Metal Sign Blown Away Tour 2012 Des Moines This metal sign is approximately 12 inches by 18 inches. This is in mint condition. The sign will ship in a flat box. B138. Conversion Table: Inches to Centimeters. 12 x 12 inches is approximately 30 x 30cm. 11 x 17 inches is approximately 28 x 43cm. 12 x 18 inches is approximately 31 x 46cm. 18 x 24 inches is approximately 46 x 61cm. 20 x 30 inches is approximately 51 x 76cm. 24 x 36 inches is approximately 61 x 91cm. For other dimensions please use the following conversion rate: 1 inch is equal to 2.54 centimeters, and 1 centimeter is equal to .39 inches. If you have any difficulties with calculating dimensions, please let us know. The math-geniuses at Postersultan will be happy to help you out! Or at least we can try. Delivery confirmation is used to track your item to insure that your item gets to its proper destination. They are more clearly stated in our about me page. Powered by SixBit's eCommerce Solution This metal sign is approximately 12 inches by 18 inches. This is in mint condition. The sign will ship in a flat box. B138.