Stately Kitchen's Extra Durable Large Non Stick Teflon Oven Liners, Pan Liners and Cookie Sheets 17" x 25" 2 Pack Pack of Extra Large oven Liners which Measure 25 x 17. Will fit in most ovens, and can be cut to adjust size. Made from extremely durable Teflon, able to withstand up to 500 degrees, AND comes with a one year warranty. Keeps the bottom of your oven from needing to be cleaned. Oven Sheets wipe clean with Very little effort. Stately Kitchen's Brand of oven liner can also be used as a pan liner or cookie sheet.