Firebox 14 Glass Fusing KilnSophisticated, Yet Easy to Use GlassFire Mode allows you to write a program simply by choosing your technique and the speed. Its that easy! Write your own firing programs with up to 8 Segments using Ramp and Hold. Now you can store up to 5 programs. Adjust temperatures or hold times while the kiln is firing using Add Time or Add Temp or simply select Anneal Now to set your project and begin annealing it. Plugs Into Household Voltage Nothing against