Features. Length: 17-3/4 in. . Width: 12-3/4 in. . Product Type: Baking Sheet. Color: Silver. Depth: 1 in. . Dishwasher Safe: No. Maximum Temperature: 450 deg. F. Material: Steel. Nonstick Surface: Yes. Half sheet pan. Aluminized steel allows for even heat distribution. Steel wire rims provide added strength and warp resistance