Terraluxe (Doughpro) DPO3.5 Specifications: Terraluxe (formerly Doughpro) DPO3.5 Round Commercial Ovens come with legs, two-part assembly, and all insulation required. This standard range of circular ovens is acknowledged worldwide for its superior cooking ability, efficiency and flexibility of design. This round commercial oven is offered with the *option of wood/natural gas-backup fired or wood/liquid propane gas-backup fired and an Internal Diameter of 33". Terraluxe's oven floors carry a lifetime warranty not to crack, and a 10-year structural warranty (contact factory for specific details). *This model is Wood & Natural Gas. Warranty: 5-year Structural Warranty and 1-year parts and labor on gas / electrical components.