Heres another rack for the sub adults i got done today. Posting for some people needing help on measurements.

6-17"x23" Shelves
2- 17"x 36" Sides
Bottom kick plate is 3"x23"

The Back piece i made it 36"x 22" to allow for easy access for wires to come out. You can use Lueon,pegboard or what ever you want. I use Lueon or pegboard for keeping it light.

All is left to do is solder flexwatt up and put on the edging for the wood.