The Blodgett 7839 Direct Vent Draft Hood is a special part that improves the performance and safety of the oven models 900, DFG, 1048DD, and many more. The draft hood in this draft works clearly to efficiently draft exhaust gases away from the cooking area so that a better ventilation is achieved and there will be no smoke or harmful emissions at all. Working by utilizing in fresh air... https://partsfe.com/draft-hood-for-blodgett-part-7839