With its weather-resistant all plastic exterior and spacious 40-quart capacity, the Engel MR040F-U1 Portable Refrigerator/Freezer is ideal for camping, boating and other outdoors activities. The MR040F is based on the very popular MT45F-U1 model and features Engel's highly efficient Swing Motor compressor. Compact and lightweight, this patented high power compressor provides truly portable cooling.