THIS IS WHAT WAS ONCE KNOWN AS A COAL FURNANCE. IT WAS USED TILL THE 2000S WHEN HIGH FUEL PRICES MADE THIS OBSOLETE AND BECAME UNSAFE FOR HOME HEATING; THIS VEHICLE IS THE F250 AKA OBSOLETE TRUCK. UNSAFE FOR THE ROAD. THE GOVERNMENT SHOULD MAKE THIS TRUCK ILLEGAL FOR PUBLIC USAGE DUE TO UNSAFE METHODS.