Jenn Air 30 JGD8130ADB Black Downdraft Cooktop 2 Burners Grill Griddle Tested. Model: Jenn Air JGD8130ADB. Condition: Cooktop is used, but in good operating condition. This unit was tested and is in working order. All burners ignite/heat and the fan operates as intended. The cooktop has some minor scratches due to normal wear and usage. [Continue]