21" X 3/4" Full Round High Alumina Kiln Shelf Porcelaineous Stoneware Clay for Pottery Fast independent adjustment of every

Fast independent adjustment of every holder against any type of pottery shape

Please observe that the pins 90 into the holes at the bottom of the barrel

6” and 8” high 1-1/2” square cordierite posts plus heat-resistant gloves

Old Hickory M-23

25” wide x 27” deep: 10 cu

21" X 3/4" Full Round High Alumina Kiln Shelf Porcelaineous Stoneware Clay for Pottery Fast independent adjustment of everySPECTRUM HIGH ALUMINA KILN SHELVES 21x 3 4" Round High Alumina Kiln Shelf for 10 Sided 23" Kilns with 2. 5" Brick 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