[SIZE]: 60"x16" , thickness: 0135" [MATERIAL]: 100% Pure PTFE [TEMPERATURE RANGE]: 350℉ to 500℉ [HIGH QUALITY]: This solvent-resistant pad is an excellent substitute for parchment paper. Since PTFE has a wide operating temperature range and it does not absorb non-polar solvents, it is a good purification material [HIGH PERFORMANCE]: Line your HFS oven shelves with these sheets for easy and quick clean-up. Silicone can absorb solvents, not allowing them to release during vacuum heating, but PTFE is resistant to absorption