Thanks. I found this unit from BDI.
http://www.bdiusa.com/theater/avion_2_8929.shtml

It's rough going as I have the VP150 to fit in a center slot and the Yamaha RX-Z11 to fit in one side.

The Z11 is 17.125" x 8.25" x 19.675” (W x H x D).
The VP150 is 27.5" x 7.5" x 7.5" (W x H x D).