A:Answer Hi Bristol! Thanks for reaching out! 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. This makes choosing a replacement microwave easy! - 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. - With that being said, the new model that you've got your eye on here will make for a wonderful replacement! Hope this helps! -Michael@GEA