Jay D in Jersey
Closed Account
All standard size(24") dishwashers have almost the exact same interior dimensions, +/- a few cubic inches depending on motor and pump size and placement. How different manufacturers design and place the racks is limited and some designs work better for different folks than others.I wish we could like our third rack like others do but we removed ours. For our personal taste it 1) often impeded with other dishes even though the upper and lower racks' height is adjustable and 2) the items placed therein did not dry.
We almost always have an empty space in the mid-section of our standard upper rack where we can place items that we would typically place in the third rack.
That top third rack likely led to the up/down adjustable top or "middle" rack. But again, the interior space is finite. So if you lower the top rack to adjust for the third rack, you lose height for larger items placed in the bottom rack...like large pot lids or platters. The worse design was Whirlpool's utensil rack on the door, which I believe they have discontinued.