This solid aluminum baking sheet is proudly made in America and is 13" x 9" with one inch rolled sides. Aluminum is the best heat conductor and will make very even cookies or roast your vegetables perfectly.
Cookie sheets, jelly rolls & baking sheets are all in essence the same thing. Jellyroll pans traditionally have shallow sides, usually an 3/4 of an inch to an inch, and cookie sheets can have these same sides or be completely flat with no edges in order to slide the cookies right off. Quarter sheet pan.