Yes, Reynolds Wrap Non-Stick Aluminum Foil can take the high heat of the grill as well as the low temperatures of the freezer. It is safe at any temperature ranging from -40° F to 650° F.Reynolds Wrap Non-Stick Aluminum Foil is a versatile tool for grilling. Always use medium to medium-high heat on the grill. Always preheat the grill first. Then, place foil on the grill with the non-stick (dull) side toward food and add food immediately.