[danielSunn0)))]

I'm building a stereo amp setup that consists of two preamps, stereo power amp, and a power conditioner; all of the rack spaces needed to make this fit will be 8u. The question is should I look for an 8u rack case (gator or SKB style), or should I get a 10u so I can leave a space between the power amp and preamps? This is my first rack build, so I don't know how important it would be for heat and such.
If it helps the power amp is a Peavey Classic 60/60, which has a pretty big fan in it to begin with, plus I hear they're naturally biased very cold & that's where part of their 'tough as nails' stature comes from. Thanks for any and all help!

 

[BMW-KTM]

I would get the 2u larger case and leave one space above and below the power amp empty.
Don't forget to support the back of the amp.
Since this is your first rack build you may not be aware the front mounting plates very likely won't take that much weight all by themselves without eventually warping.
Many people put a block of wood under the bottom of a heavy amp.
There are also ways to hang the back of the amp from the rear mount plate but sourcing the hanger adapters can be tricky sometimes

 

[sorbz62]

I would not bother with spaces. I have had a rack, on and off, for 30 years and never had a space. This will keep the size down and make the rig slightly more compact. The only reason to have spaces is if you are running your power amp flat out or leaving it on for very long periods of time.