Ok, yes it is a Class C but it fits well in this section of Class B Forum.
-20 C during the demo!
From ski trips to summer holidays, enjoy the comforts of home in the Regency GT24MB. With features like dual pane windows, a rear auxiliary heater, sidewalls with thermal break, and enclosed and insulated heating tanks, the Regency GT24 can be enjoyed with four-season comfort. Dual pane windows ensure your unit will stay cool on hot days, and keep it warm on those cold nights. Unlike anything else in the industry and tested in our own backyard in the great white north, the Regency GT24 is truly built for use in all types of climates.