A:Answer Hello there! There is very little difference in height, width, and depth between a tall tub and regular tub dishwasher. The tall tub allows for plates that are larger than normal the space needed to clean properly. I have a link between two units, the tall tub on the right, that will help show the specs between the two units. I hope it helps you. http://www.whirlpool.com/webapp/wcs/stores/servlet/WHRCompareProductsDisplay?catalogId=10561&categoryId=721820&langId=-1&storeId=10211