Preparing your shelf has never been easier! PAPYROS Kiln Shelf Paper in 13" pre-cut circles is an ideal fit for the kiln shelf for most 14" - 15" diameter kilns. Save time and eliminate wasted shelf paper with this convenient size. PAPYROS Kiln Shelf Paper is a ceramic-based paper specially formulated for glass fusing. It is ideal to for the majority of fusing projects up to 1600°F. Because of its sturdy composition, PAPYROS provides excellent glass/kiln shelf separation on the first use, and frequently in subsequent firings as well. Sheet measures 13" round. PAPYROS tends to retain its paper-like qualities during firings, rather than decomposing into loose dust. The degree to which PAPYROS retains its integrity can be affected by the characteristics of the glass being used as well as firing schedules.