Planar 4D-12 mounted in a Ridgid travel box for remote use.  12-Volt system that can be used to heat the ice hut or on the boat during your trip to hunting camp, then move the ducting to the tent and stay warm on those cool nights!  Fuel tank is mounted on the side, it's an all in one unit!  Just provide 12-volt power (ducting optional and not included) and you are off.  (120V plug-in for generator use optional).