Good portable AC for growtent

[Swagalotus]

Title says it all, looking for a portable AC that I can use in my future growtent. I need it to be able to drop temps to at least 60f if not 55f. Suggestions?

 

[naoki]

I saw an FB post about this page: DIY Air Conditioner - Cooling Systems for Highland Nepenthes It isn't exactly what you are intending to do, but I thought that it might be interesting to you.

Grow tents have thin walls, are you going to insulate it? I've been thinking something similar for a while, and it seems a box built with 2" EPS foam insulation with reflective side (for house construction) to make the enclosure may be better.