L&L Easy-Fire Automatic Zone Control Kilns are the industry standard in professional-grade electric kilns an L&L's most popular line of kilns. They include durability features like element holders, protected thermocouples, super-strong stands and solid peephole plugs. For unparalleled performance and excellent temperature uniformity they include automatic zone control. They are designed for easy maintenance with their easy pull-down panel, light weight lid lifting system, easy-to-change elements and color-coded wiring. The Easy-Fire XT Square Kilns are the same great Easy-Fire Kiln, but in a different shape. You can choose from the standard style elements or upgrade to the long lasting quad elements for consistent cone 10 firings.