The GM1414 with View and Lift Lid runs on 240v - requires 34.7 amp breaker. Inside dimensions 42" x 25" x 13.5" deep, 6.7 cubic feet. Glassmaster 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 8 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 1800 degrees fahrenheit. Viewing window mounted on side for perfect viewing is made of quartz to withstand the temps. Lid Lifter lifts up to 100lbs with ease. 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.