15 1/2" X 5/8" Half Round High Alumina Kiln Shelf Small Hand Extruders The HF 1210-B is built

The HF 1210-B is built with 3" firebrick with a maximum of cone 10 (2350°F)

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• Extend the Life of Kiln Elements

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15 1/2" X 5/8" Half Round High Alumina Kiln Shelf Small Hand Extruders The HF 1210-B is builtSPECTRUM HIGH ALUMINA KILN SHELVES 15. 5" x 5 8" Half Round High Alumina Kiln Shelf for 8 Sided 18" kilns Spectrum High Alumina Kiln Shelves are excellent for electric kilns and gas kilns. The clay body used has a much higher amount of alumina than regular coredierite shelves. Alumina makes it more refractory or resistant to high temperatures. They are rated to cone 11. They are pressed into molds rather than cast. This compression makes them much