A:Answer Hi JohnB- Yes, all 30" over-the-range microwaves are approximately the same width, and are designed to fit into a 30" wide cabinet opening. Each microwave comes with the mounting hardware (mounting bracket, screws, exhaust adapter), top and rear templates, and installation instructions needed to make installation a simple process. This makes choosing a replacement microwave easy. JNM7196DKWW is approximately 29 3/4"W x 16 1/2"H x 15 1/2"D. Check out the Quick Specs for more details: http://products.geappliances.com/MarketingObjectRetrieval/Dispatcher?RequestType=PDF&Name=JNM7196DK_C3.pdf - Thanks for your loyalty. Enjoy! SUEatGEA