Thank you for your review as it is very important to us. We are very sorry for the issue you are experiencing and the inconvenience this has caused you. The specification sheets for this item is available to view on the link to this item on the Home Depot web site. It provides the 72" which is your nominal dimension, and will also provide you the bathing well dimensions. Should you need any further assistance, please feel free to contact us directly through the American Standard website "Contact Us" link located at the bottom of our home page.
Sincerely, American Standard Customer Care Tech Team