Measuring in at 17" x 17" x 6.5" the Studio Pro 17 STP is the largest 120V glass firing kiln in the industry and features surface mounted heating elements for maximum heat transfer, Superwool fiber lid for efficiency and increased firing speed potential, Dual Access Design for precision glass placement and easy to use 12-Key Rampmaster Controller. Specifications - Max Temp: 1700 F / 926 C; Amps: 18/120V; Phase: 1; Watts: 2160; NEMA Receptacle: 5-20; Breaker Size: 20 Amp; Wire Size: 10; Length:17"; Width:17"; Depth: 6.5"; Volume: 1.1 Cubic Ft