Welcome rappar. Since your custom building your stand it sounds like you might be interested in a DIY version. I looked into this as well and decided to do it myself. Go buy a very quiet computer fan from any PC store. Then buy a matching power supply (wall wart) for the fan - make sure to match voltage and that the amperage of the power supply meets the fan requirement. Lastly buy a cheap thermostat from Home Depot and string it all together. You could also forget the thermostat if you plug the power supply onto a switchable outlet on the back of your amp if it has one. That way the fan will be on whenevr your AVR is on. Hope that helps!

Dan
On-Wall M5HP LCR, QS8 & EP500 in 7.1