Jupiter Automatic Polygonal sectional kilns come in 10 sizes from 2.5 cubic feet to 17.2 cubic feet. They are available in 3 basic cross sections from 18" high to 45" high (with custom configurations and sizes available). 2-1/2" or 3" firebrick, DynaTrol automatic program control with zone control, "Easy-Lift, Easy-Load" spring hinges on sizes 23-3/8" diameter and above. Uniquely, the kiln sections plug into an external control panel. The kiln can be shortened or made higher easily and can be pulled apart for loading sculpture or large objects that need to be fired.