A:Answer Hi Rita, thanks for reaching out! Based on the Quick Specs of the unit, you would need, at the very least, 23 1/2" depth in your cutout space to properly install this unit. We can only recommend that you follow the installation instructions as they are written due to the fact that these are the conditions under which we have tested and approved this model. We apologize for any inconveniences. If you have any other questions, feel free to reach out any time. All the best. -Michael