I live in a very old house & am finally replacing the stove. It is a gas stove & I want to put a microwave vented out above it. For various reasons, too numerous to go into, I have to work with the space I have & there is not a vent upward. From the top of the stove to the top of the cabinet above it is 31 inches. I've been told that there needs to be 17-18 inches between the top of the stove & the bottom of the microwave. The smallest microwave I can find is 16 inches. Does anyone know of a brand that has a smaller microwave? I can't put a vent in. Thanks for your help, I'm at my wits end!