View on LOZ Suggested Retail: $1349.99. Duluth Forge FDI32R Dual Fuel Ventless Fireplace Insert - 32,000 BTU, Remote Control. TECHNOLOGY - 32,000 BTU Patented DUAL FUEL TECHNOLOGY using Natural Gas or Liquid Propane Blue Flame Heater Which Heats up to 1,500 sq. ft Area. DEPENDABLE - Remote Control offers the burner on and off and maintain a desired room temperature. Ideal for greater heat flow that could add the warm atmosphere in your room.. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.