The mats shown in the photograph below are called museum or gallery mats. Museum mats are available in mat sizes 11x14 and larger. These bottom-weighted mats offer a more sophisticated, unique look and allow a horizontal photograph to be placed in a vertical frame. If you prefer a museum mat to a center cut mat, make a notation in the "Additional Information" box on the "Please enter your customer details" page when ordering. There is no additional charge for a museum mat. Prices for unframed double matted pieces are as follows: 11x14-$33.00, 16x20-$49.00, 18x24-$59.00. In the photograph below, from left to right the sizes of the museum mats are: 18x24 White & Cream, 16x20 Very White, and 11x14 Very White.