Inside dimensions of kiln: 8" x 8" wide x 6.5" deep, fires to cone 10/2350°F; with adjustable stand ranging in height 23" to 33" tall. The HB86P Vitrigraph comes with 2 floors, 1 fiber & 1 cordierite - both floors with holes for stringers to flow through. An infinite switch controller is a high-medium-low switch, or a 1 to 10 power switch. It controls how much power is going to the kiln, but doesn't set a particular temperature. You need to use it with a pyrometer, which is a thermometer for kilns. A brick floor for firing the kiln during regular use slumping, fusing, jewelry making, testing, etc. can be purchased separately. Kiln 55 lbs., Stand 30 lbs.
Specifications - Max Temp: 2350 F / 1288 C; Amps: 15/120V; Phase: 1; Watts: 4,320; NEMA Receptacle: 6-30; Breaker Size: 20 Amp; Wire Size: 10; Lenth:8" Width: 8"; Depth: 6.5"; Volume: .24 CU FT