A:Answer Thanks for your interest in the NX58J7750SG. Unlike the Electric Flex Duo models, there's no built-in storage for the divider when not in use, so you may choose to store it in a cabinet with cookie sheets or standing up in another suitable, out of the way location. Most people actually use the oven with the divider installed the majority of the time, whether they're using just the upper or lower oven or both. If you're cooking only one dish that fits in the divided oven, it's fine to use it in Twin mode; this can save both time and energy compared to heating the entire 5.8 cubic foot oven.
- Ms. Samsung