A:Answer Hi Rick- We certainly appreciate your loyalty! 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. 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. You can view the Installation Instruction online at this link: http://products.geappliances.com/MarketingObjectRetrieval/Dispatcher?RequestType=PDF&Name=49-40765.pdf - Thanks for choosing our GE® Over-the-Range Microwave JVM6172SKSS. Enjoy! SUE@GEA