Just a cheap ice chest air conditioner that I tossed together with some parts that I had laying around. Small ice chest, rigid foam insulation, a couple of frozen 2 liter bottles of water, an old 12 volt boat blower motor, a car battery & a pringles can! It works OK at best & is good for about a 10-15 degree temperature drop. Of course it would have worked much better with a larger cooler & more frozen bottles. I only did it for the fun of it, i could see a larger one being OK for camping in a small trailer but that’s about it + you need to replenish the ice.