Spectrum Papyros Shelf Paper Craft Roll - 20-1/2inch X 82' Sturdy, ceramic-based paper is specially formulated for glass fusing and can be used for multiple firings Provides excellent glass/kiln shelf separation at temperatures up to 1600 F Retains its paper-like qualities after firing making clean-up easier Roll measures 20-1/2&quot; wide x 82 feet long