It is easy to stack the sections and then, after the kiln is lined up to your satisfaction, you can plug the sections into the instrument box. Switches, electronics and other sensitive components last longer. There is a full open air space in-between the kiln and the control box. There is absolutely no wiring to disconnect and reconnect. This is done per the National Electrical Code and UL standards.
All elements are the same and interchangeable.
No chance of element mix up. No chance of kiln uniformity being affected by element changes. There are full one inch diameter untapered peepholes with insulated plugs for ventilation and cone sighting. These allow greater visibility into kiln. There is one peephole per section.