A:Answer Thank you for interest in our home comfort appliances. Based upon the information you have provided, we would recommend that you consider this such model and other 10,000 BTU models to fit your needs. This particular model, as well many of our air conditioners, has a height of 14 1/2" which may not fit your wall's opening however you are safe when it comes to the 19" width. We suggest that you consider either a smaller BTU size or extending your opening to at least 15".