These are a bad idea because of how they block up access to the plumbing connections for the sink they are supposed to fit under.
If you should have a leak back there it will be difficult to impossible to access it. That will certainly lead to other maintenance issues.
One also has to coordinate this dishwasher with the choice of the sink and fixtures. A special sink with rear corner drain is non-standard and adds to the costs. As does a non-standard sink elbow arrangement. You are limited with sink depth as well.
These dishwashers may wash fine, maybe. They are very basic looking.
An 18" dishwasher is a much better choice as it's standard install just in a narrower space and there are many models to choose from.
If a kitchen is so-o limited in space that it can't possibly fit a standard or even 18" dishwasher; it's doubtful it actually Needs a dishwasher.
This under sink dishwasher is part of the plethora of prototypes that GE was doing in the 60s with the likes of their variable speed washer, and the utility sink top washer, the combination washer/dryer, and a variety of other appliance designs that didn't make it to commercial success.
Obviously, the only reason they still make this is for the replacement market.
300 Series 18 in. ADA Compact Front Control Dishwasher in Stainless Steel with Stainless Steel Tub and 3rd Rack, 46dBA. ADA compliant and compact size for small spaces. 3rd rack and adjustable middle rack for loading flexibility.
www.homedepot.com
