Envelop Kiln, 500 Cu.Ft., Gas Fired, Fiber Insulated, with two 20' long fixed carts with 36 burners on each cart, fired cone 6, Inside Dimensions: 20'L x 5'W x 5'H, overall length is 43' long, the box is 7'H x 7'W x 22'L not including hood, comes with temp and firing control system all plumbing and furniture stack and hood.