Ovenable Paperboard Container 22 Oz, 100 Count Superior to CPET, our paperboard products have greater structural rigidity at high temperatures, and will not fracture when frozen. Can go from oven to freezer and back to the oven or microwave. Good for temperatures -15 F to 400 F. Our recyclable products are environmentally friendly and are made from 90% or greater renewable and sustainable materials. Compatible with heat-sealing film machines.