The Norseman 1500 Warm Air Add-on Furnace works as a primary or supplementary source of heat for your entire home or workshop area. Conserve dollars spent on conventional heating methods using this solid fuel efficient wood coal furnace. This indoor wood or coal furnace comfortably heats most small to medium homes with an output of 30,000 to 90,000 BTU's. In the event of a power failure, the Norseman will continue to provide heat on a low setting. Norseman furnaces are designed for indoor installation only. (Not Applicable for Anthracite Coal Firing).Adjustable bi-metal thermostat provides automatic controlled combustion for even heating Heavy duty 7 gauge steel firebox for years of service Single 550 CFM blower provides efficient air flow through existing duct work Large firebox holds enough fuel for several hours of heating per load Large 12 x 12 x 7 feed door for easy loading Accepts logs up to 18 in length or 100 lbs. of bituminous coal Protective smoke curtain prevents smoke from escaping furnace Adjustable, cast iron spin draft for additional burn control Convenient ash door and large full-length ash tray for easy clean out and disposal Includes heavy duty cast iron push-pull grate to ensure complete combustion Two raised and tapered heat outlets provide easy connection for 8 heat ducts Safety tested to UL 391 Heats up to 1,500 square feet Up to 90,000 BTUsCollection: Norseman Height: 40 Length with Blower: 40 Length without Blower: 24-1 2 Weight: 380 Width: 21-1 2