Cordierite-mullite kiln shelf. 13" x 26" x 3/4" (330 mm x 660 mm x 19 mm). This shelf is a common size used in large oval kilns like Euclid's R-450 as the centre shelf of a 3-shelf set.
Buy 10 of any 1 kiln furniture item & pay 10% less.
The low-expansion property that allows this shelf to withstand repetitive kiln firings also applies to lower temperature applications. Kiln shelves make excellent pizza stones!