Terraluxe (Doughpro) DPO4 Specifications: Terraluxe (formerly Doughpro) DPO4 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. Internal Diameter of 36" with an 8 sq ft. cooking surface. The cooking surface (hearth) of the oven uses high quality 3" thick alumina bricks, renowned for their excellent cooking attributes and incredible wear resistance. This round commercial oven is offered with the *options of wood or wood/gas fired, choose from drop-down menu when ordering. *This model is Wood & Liquid Propane Gas. Warranty: 5-year Structural Warranty and 1-year parts and labor on gas / electrical components.