Product review (5 stars): GOOD FREEZER
I DON'T KNOW IF THIS FREEZER REACHES -20 DEGREES, AND I REALLY DON'T CARE. I BOUGHT ONE OF THESE FOR MY BOAT (VERY LIMITED SPACE) AND IT PERFORMED PERFECTLY WITH AN INVERTER. ON HOT SUMMER DAYS THERE WAS NO MORE FOOD SATURATED WITH MELTED ICEWATER, NO DRIPS, NO HAULING ICE ETC. I RAN MINE AT 0 DEGREES WITH NO PROBLEM AND NOW NEARLY TEN YEARS LATER, IT IS STILL WORKING JUST FINE. A LITTLE PRICEY, BUT IF YOU HAVE LIMITED SPACE, IT IS A GOOD OPTION.