The FireBox 14 runs on 120v - requires 15 amp breaker. Inside dimensions 15" x 15" x 6.5" deep, .8 cubic feet. Glassmaster LT conroller gives you GlassFire Mode allowing you to write a program simply by choosing your technique and the speed. 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. Fires to 1700 degrees fahrenheit. Furniture Kits for 120 volt glass fusing kilns include 2 layers of shelving for stacking ware, assorted square posts, ceramic paper and a one pound bag of kiln wash. Instruction manual, and warranty card included. Two-year warranty.