The 1300 add on furnace is designed to use in conjunction with your existing HVAC ductwork and work seamlessly with your existing furnace. With a 550 CFM blower and up to 115,000btus it is designed to heat a home up to 1900 sq. ft. This unit is made with a firebrick lined plate steel firebox surrounded by red powder coated steel giving the unit an eye appealing look. Connection to your existing ductwork is easy with the two 8 diameter heat outlets. Available accessories include the Universal filter box Kit.6 Flue collar Dual 8 diameter heat outlets Automatic bi-metal draft damper Firebrick lined to boost efficiency and heating capacity Separate ash door with removable dump pan Removable replaceable shaker grates (handle included) Extra heavy duty cast-iron doors, grates, and liners Durable painted exterior Not approved for use in mobile or modular homesBlower: 550 CFM BTU Range: 38,585 - 115,643 Coal Capacity: 50 lbs. Depth with blower: 45-1 2 Depth without blower: 32 Firebox depth: 22-3 4 Firebox height: 17-1 2 Firebox width: 16-1 2 Fuel Type: Wood Coal Heating Capacity: 1,300 - 1,900 Sq. Ft. Height: 40-1 4 Log Length: 21 Vent Location: Top Vent Vent Type: Chimney Weight: 375 lbs. Width: 21Due to EPA and state regulations, we are not allowed to ship this to California, Oregon and to Washington State.