A:
Most Samsung over the range microwaves measure 29-7/8" wide to fit the standard space above a 30" range. While the height and depth vary slightly depending on capacity and the different design elements, they're approximately 16-1/2" to 16-15/16" high and 15" to 16" deep without the door (about 17" to 18" deep with the door). The SMH1816S is 29-7/8" wide by 16-15/16" high by 15-1/8" deep without the door and 17-5/16" deep with the door.
I would suggest contacting your local Best Buy Appliance Associates for assistance selecting a model that best meets your needs, based not only on the dimensions, which are all within a fairly standard range, but also on the features like Sensor Cooking and the pre-programmed recipes and settings.
- Ms. Samsung