Hi, your best bet, since you clearly know what you want, is to consult with a manufacturer directly. I'm sure that the major suppliers will come up with a solution. I have used APC products for many years and I have a rack-mount that's similar to what you're looking for (except it's not black). My SU2200RMXLTNET has 1) L6-20 input (208v), and outputs of 1) L6-20, 1) L6-30, 2) 5-15 recepticles. this model is rated at 650 watts. Check out www.apcc.com they have numerous product selection options.
p.s. I don't sell these products or work for the manufacturer, but I use them. I believe any of the major makers of this type of product will custome-fit (for a price). Don't be afraid to talk to a sales-person. Good Luck
---Will