This heavy duty Stoven 12 cup muffin pan is made from 1mm thick carbon steel with a durable and highly effective Quantum 2 non-stick coating, making it easy to use. Dishwasher safe, but as the Quantum 2 non-stick coating is so easy to clean, handwashing is all that's usually required. Oven safe up to 240°C/464°F/Gas Mark 9, this Stoven 12 cup muffin pan is also fridge and freezer safe. Stoven 12 cup muffin pan dimensions - Exterior 35cm x 26.7cm x 3.2cm. Stoven bakeware is a range of professional quality non-stick bakeware that's been created in collaboration with, and is exclusive to, Harts of Stur. Perfect for novice bakers and confident cooks alike, the Stoven bakeware range is the ideal choice if you want reliable and affordable bakeware that doesn't sacrifice performance and quality.