As a result of installing this oven we have an additional 3" of internal width and 3" of internal depth as compared to our old model and the external dimensions are the same and it required NO cabinet modifications. 3 inches may not sound like a lot but it has made a huge difference. Pans that wouldn't fit before now do. Pans that were once snug not have plenty of room. It also is just beautiful with great features. Very happy!