As of July 2015, the KitchenAid website provides the best place to find specifications for KitchenAid appliances. Many of the pages for individual appliances have links to their specifications. These pages are accessible from the Major Appliances and Countertop Appliances tabs on KitchenAid's home page.
Under one of these tabs, a visitor should click on one of the category links, such as Ranges, Dishwashers, Blenders or Toasters. From there, a visitor can refine choices until he reaches a page with variations of the chosen appliance. At that point, a View Details link goes to a page dedicated to a specific model. If dimension, weight and design details are available, they are listed under a Specifications tab.