Tim Holtz Glass Media Mat 23.75 inchX14.25 inch - Left-Handed - Measuring 14 x 23 inches with a sleek black finish, the Tim Holtz Glass Media Mat is a fantastic multi-functional tool for creating on your workspace. The 12 x 14 inch measuring grid features imperial and metric measurements, and the white 7.5 x 11 inch mixing palette area (complete with a durable non-stick mat) is ideal for preparing wet mediums. Glass Mat size 14 x 23 inches (35.5cm x 58.3cm). Non-slip feet on the base of the Glass Mat for a secure workplace. 7.5 x 11 inch (19cm x 27.9cm) mixing palette area. 7.5 x 11 inch (19cm x 27.9cm) durable white non-stick mat overlay. Grid markings on the main area. Glass mat is made of tempered glass to help resist scratching, but it is not scratch-proof.