Advantages of milk crate 'cases'?

[Icarus21]

I currently am using a stacker 830 for my mining rig. I'm getting temps of around 68-83 celsius on my cards. I was wondering if moving my rig into a milk crate case would improve temperatures. If so what are the traditional ways of cooling milk crate cases? Would having one fan blowing in the direction of the milk crate be enough? Also, if temperatures do improve what is often the improvement compared to traditional computer cases?

Thanks!

[Epiauri]

Hmmm, if you could put a fan above the cards and have some holes beneath the cards so that the air can circulate then that will lower the temperature of the cards a little, but I wouldn't put anything in such plastic if I was clumsy...