A:Answer Hi Jackmosttrades - It's great to hear from you! 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. We suggest our GE® 1.7 Cu. Ft. Over-the-Range Sensor Microwave Oven JVM6175DKWW (Two-speed, 300-CFM venting system) or GE® 1.9 Cu. Ft. Over-the-Range Sensor Microwave Oven JVM7195DKWW (Four-speed, 400-CFM venting fan system). JVM7195DKWW also features a dark gray, easy clean enamel interior with Steam Clean option- spend less time cleaning! We certainly appreciate your loyalty. Keep in touch! SUE@GEA