Chef Essential Extra Large Oven Liner, 17x25 Durable Non-Stick Teflon Material Sheet, 2 Pack Never clean or scrape the bottom of your oven again - Collects all drips, drops and spills. Easily clean up spillovers fast and reuse - Simply wipe clean or wash under warm water. Lasts for years. Multi purpose liner - Works great and safe to use as an oven or pan liner, baking/cooking sheet or mat, easy to trim for a custom fit. Place liner ONLY on bottom rack NOT on oven floor. Avoid using metal, sharp or pointed objects on the liner. Don't place in direct contact with flames, burners, grill or heating elements. Can be used in microwaves, electric, gas and toaster ovens. Resists heat up to 500 degrees. Bake without worry, Comes with pack of 2 extra large baking sheets measuring 25 x 17. Lifetime warranty from the manufacturer.