39.5 Wide One-Sided Ethanol Burning Firebox Features:Ventless - no chimney, no gas or electric lines requiredEasy or no maintenance requiredInsulated double layer 3 mm stainless steel constructionLow heat transfer - safe ZERO clearance easy InstallationPatented Design & Technology39.5 Wide One-Sided Ethanol Burning Firebox Includes:Fireplace InsertBio Ethanol InsertGlass4 x Glass BracketsDamper ToolFunnelUser's Manual39.5 Wide One-Sided Ethanol Burning Firebox Specifications:Product Dimensions: 16.50"D x 39.5"W x 27.25"HProduct Weight: 148 lbs.Capacity: 7 LitersApproximate Burn Time: Up to 8 Hours per RefillApproximate BTU Output: 16,000