I'm hoping I may get some ideas on how best do build my utensil pullout. I am putting a 9" pull-out next to my cooktop that I would like to use as a utensil pull-out to replace the 2 crocks I currently keep on the counter. From all the research I have done I plan to use 3 Bain Marie pots in the pull-out.
Here is an example:

Traditional Kitchen by Tulsa Kitchen & Bath Designers Jay Rambo Co.

However, I'm struggling to figure out what exactly I need to order. We are ordering Brookhaven cabinets, however their pull-out has the top shelf fixed, so that won't work. I was planning to order a frameless cabinet with the door not attached, now I need to figure out what guts to purchase.

Rev a shelf has a Blumotion version 448-BCSC-6C or 448-BC-6C version that seems like it may work, but it has side rails that may get in the way.

I would be happy to build my own box for the bain maries, but I just don't know what slides to use for it. Any suggestions would be very much appreciated.