Coneart - 2318D Double Wall Electric KilnOverview 4. 7 Cubic Feet Double Wall Construction Kanthal A 1 Elements 208 or 240 Volts 50 Amp Breaker Required Bartlett Controller Product Description The Cone art 2318D is rapidly becoming a favourite for home studios and schools. It is exactly like the popular 2318D except it is 18 deep. This makes it much easier to load and unload. It has the same heavy duty double wall construction as all of the other Cone Art pottery kilns resulting in