Katbite Heavy Duty Parchment Paper thick enough to extend the baking time! Parchment paper has been upgraded to 45GSM. 12% thicker than general 35GSM to 40GSM parchment paper sheets. Standard Size for a half sheet pan. Just pull one of the precut 12 x 16 inch parchment sheets out and it's ready to use. No more curled edges. Non-stick baking parchment sheets. Two-side food grade silicone coating to prevent food from contacting the baking pans directly and causing stains.