Hardware

I haven't compared prices recently. But I used to buy all my racks from Premier Metal.

http://www.premiermetal.com/html/home.html

http://www.pmpwest.com/

They were sturdy and reasonably priced.
I used the Spartan series.

Chas

http://www.atlassound.com/index.cfm

delete spaces after copy and paste.

This company has been building racks since the 50's.

Good Luck Lee