I am looking for an over the range microwave that is 14 inches or less in height. Are there any models that match?

Check Walmart and CompUSA.

Simplest thing to do is to go to HD or Lowe's and measure the units. My GE is 15.5". Some people will remove the wall mounted unit, install a shelf-watch for clearances! And put a free standing unit in place of the wall hung.