Made from an exclusive PTL material that gives great performance at a fraction of the cost of Nylon pan liners. Use to protect oven baking and roasting pans, steam table serving pans and cooking pots and more to make clean up a breeze. Using these popular pan liners is a great way to save on labor/clean up of cooking pans in busy kitchens. They also preserve the life of pans by acting as a physical barrier to sticky and baked-on residue and thus avoiding the repetitive scrubbing that reduces the life of the pan. Designed to withstand temperatures from +400 degrees F to -100 degrees F, so they can be used for short term food storage as well. Gauge: 0.00048.