Just throwing this out there because I see a lot of people spending to much on open air rigs.
Cost $40 at Target, cant find it online because their website is shit. Holds 4 rigs with risers and a non riser board on top OR 2 surge protectors. Easy to install, sturdy, and great cable management POTENTIAL (im not wasting my time on that lol).
If your not lazy like myself you can further install a divider on each shelf to hold 2 rigs per shelf. Lots of room for creativity. Im going to decorate mine when I feel like it lol.
http://imageshack.us/a/img189/192/cam00135g.jpghttp://imageshack.us/a/img267/9219/cam00134.jpg