Thankyouverymuch sir. And I salute you.

Is that deck aluminum? Looks 1/8" thick. Must be steel?

No matter. That is so simple. I love it. Why I am I not making one of those right now?

I have a 2 foot by 3 foot sheet of 1/4" thick aluminum. I could make like six of those lovely racks, once I round up the other hardware.

Your design is similar to the Cetma rack, although yours was no doubt significantly less expensive.
http://www.cetmaracks.com/