Non-stick silicone coated Sheet Pan, Half Sheet size. Inside pan dimension 17.25 x 12.25 x 1.0 inches. Steel wire under rolled edge along with heavy gauge material prevents warping. Made of Aluminized Steel with benefits of even heat, being less reactive to acids, corrosion and rust resistance. Non-Stick silicone coating is PFAS, PTFE & PFOA free. Made in USA by USA Pan. Not Dishwasher Safe. Not recommended for use over 450 degrees F.