I have installed many single dish drawers, but I am working on a job now that will have the stacked version. Do I even need to build a cabinet? Looks from the specs that it just sits on the toe kick. In the plan, in sits between two cabinets.
From contributor T:
We have a single unit Fisher Paykel in our shop right now. This one has a panel over it to make it look like a cabinet. But it doesn't. The literature calls out for a 9mm gap at the bottom of the panel and a 5mm gap at the top and sides. The adjacent cabinetry that it is supposed to blend into has a typical gap of 2.5mm. Another thing that will sneak up on you is the control switch that has to be mortised into the front panel. This switch relies on a compression fitting to stay in place so the hole has to be perfect. We added something for the hassle factor but we did not see this switch coming. I posted the dimensions below in case you are interested.
When integrating with European cabinetry, you really can make them blend in. The double model does not require any type of cabinetry below, and does not have to have toe material to match the cabinetry, but they have a very good method of adding a piece of toe material to an adjustable bracket that really does make a great finished look.
The picture below shows the double dish drawer to the left of the sink. The one thing that we as cabinetmakers notice is the 8mm reveal between the two panels, but every one of our clients love the way they look (single or double), they just don't notice the larger reveal.
The way they are attached to the cabinetry on either side makes them rock solid, and solves the problem of needing to attach a dishwasher to a granite countertop.