Professional Non-stick Oven Liner, Baking Liner, 16-1/4-Inch by 23-Inch (Brown, 1) Reusable food standard PTFE-coated (Teflon) fiberglass sheet with a non-stick surface on both sides; Thickness is 0.13mm, different from the thinner 0.08mm type No mess, protects the bottom of the oven from spills, splatters and burnt baked foods Reusable for years and can be trimmed to any of your desired sizes for your appliances Bake food without oils or fats; Easy clean with warm soapy water. Do not use abrasive cleaners Suitable for electric and gas ovens with temperature ranging -140-520F;