A:Answer Hello, all 30" over-the-range microwaves are approximately the same width, and are designed to fit into a 30" wide cabinet opening. Therefore, any of our 30" over-the-range models will work as a replacement for an existing 30" over-the-range model. As a note, when replacing an over-the-range microwave, the mounting bracket included with the new microwave should be used since the mounting bracket is specific to each model. The new screws, bolts, and exhaust adapter should also be used. The model you are looking at would be a great replacement! To see more information about that microwave, please see the use and care manual here: https://products.geappliances.com/MarketingObjectRetrieval/Dispatcher?RequestType=PDF&Name=49-40669-6.PDF The model has similar convenience controls as your previous microwave, such as: Beverage, Cook Time, Defrost: Weight/Time, Popcorn, Potato, and Reheat. I hope this helps! -Chris