The Nifty 3-tier baking rack doubles the capacity of your oven and cuts your baking time in half. Bake up to 200 cookies an hour! This rack is the perfect solution for the busy baker. Bake your Christmas cookies in half the time, leaving more time to spend with the family and enjoy the day. The rack also is great to cool your cookies. Simply pull your cookie sheets out of the oven and place on the rack to cool. The rack also comes with 3 Non-Stick half Sheet baking sheets. The sheets are oven safe up to 500 degrees.