The Colonial is an air tight fireplace insert that will greatly improve the efficiency of your fireplace. With a heavy cast iron door with a cool touch wood handle, and an air washed ceramic glass that allows a magnificent view of the burning fire, it will be a beautiful addition to your existing hearth. It comes with the Hearth Surround to fully enclose the Existing fireplace, and is equipped with a spring loaded automatic adjustment to make installation a breeze.Burns up to 8 hours on one fueling The colonial wood stove heats up to 1,800 sq. ft. Accepts logs up to 18 in. in length Adjustable high speed (125 CFM) blower included Cast iron feed door with large 16.5 in. x 9 in. ceramic glass window Heavy gauge 3 16 in. reinforced plate steel with firebrick lining Large hearth surround, 31 in. x 44 in. Safety tested to UL standard 1482-1998 Over 75% efficient VentedBTU Rating: 69,600 Collection: Colonial Depth: 24-4 5 EPA Approved: Yes Finish: Metallic Height: 21-1 2 Indoor Outdoor: Indoor Material: Steel Mount Type: Freestanding Pedestal Base: Yes Rear Heat Shield: Yes UL Listed: N-No UL Code Rating Weight: 265 Width: 26-1 2Consult your local building code agency, prior to installation, to ensure compliance with local codes-including permits and inspections.