Door type dishwashers come preconfigured for straight-through operation. Some units can be configured to go in the corner. For corner configuration, the door and handle positions are switched so racks can pass through the “front” of the unit and one of its sides.
One important specification to note is the interior clearance. This dimension indicates the height of the opening, as well as the tallest kitchen item that can go into it. Since there are upper spray arms, items that are too tall will stop the sprayers from spinning. The taller the interior clearance opening, the taller the wares that can be washed in the unit.