Sur La Table Platinum Professional Standard Muffin Pan 21200MF, 12 Count our commercial-quality muffin pan meets the highest standards for performance and durability Each piece in this set is constructed with the same features found in the best pans in the industry Thick aluminized steel offers superior heat transfer, corrosion and rust resistance, and excellent durability Each pans thickness is based on years of performance data to deliver perfectly even heat distribution and a lifetime of use Steel wire is added to pan rims for extra strength and resistance to warping Developed just for Sur La Table in Pittsburgh, PA, by USA Pan Commercial-quality professional bakeware meets the highest standards for performance and durability Each piece in this set is constructed with the same features found in the best pans in the industry Thick aluminized steel offers superior heat transfer, corrosion and rust resistance, and excellent durability Each pans thickness is based on years of performance data to deliver perfectly even heat distribution and a lifetime of use Steel wire is added to pan rims for extra strength and resistance to warping Manufactured with 65% recycled steel Unique fluted design with corrugated construction maximizes strength and impact resistance, and resists warping and denting that can occur with use Textured surface allows airflow under baking food for beautifully even overall results and easy release every time Nonstick silicone coating is specifically formulated for baking and contains no PTFEs or PFOAs The most advanced coating available, no other surface releases food and cleans up more easily Material: Aluminum with silicone coating Dimensions: 15.8&#034; x 11.2&#034; x .8&#034; Cavity Dimensions: 2.75&#034; x 1.38&#034; Capacity: 12 (3.8 oz.) muffins Made in the USA Hand wash with warm water and mild detergent using a sponge or nylon pad. Rinse and pat dry thoroughly Use only silicone, nylon or wooden tools. Do not cut in the pan or use sharp metal utensils. Do not heat beyond 450F Wash before first use