I need a 4 to 6U steel rack to mount the amp and EQ I am getting. There are plenty of nice ones - for the better part of $100. I am thinking more along the lines of $20, just something to house the amp and EQ. I checked Parts Express, Carvin, Musicians Friend, etc. and everyone has nice stuff, but I need a 'install' rack that will sit on a shelf. Any ideas where I can get a cheap rack for my gear? Thanks!