The 1602R add on furnace is designed to use in conjunction with your existing HVAC ductwork and work seamlessly with your existing furnace. With twin 800 CFM blowers and up to 180,000btus it is designed to heat a home up to 2400 sq. ft. This unit is made with a firebrick lined plate steel firebox surrounded by brilliant red painted steel giving the unit an eye appealing look. Connection to your existing ductwork is easy with the 13 x 18 heat outlet. Available accessories include the Universal filter box Kit and Hot Water Coil kit.Twin 800 CFM blowers provide redundancy and large amounts of air flow Fully insulated internal ducting ensures the most heat transfers and optimum efficiency Automatic draft induction blower included 6 Flue collar Secondary heat exchanger with fireback baffle for extra long life Manual damper system allows fine tuning for maximum efficiency Firebrick lined firebox to boost efficiency and heating capacity Separate ash door with removable dump pan Extra-heavy duty cast iron doors, grates and liners Exterior front mounted shaker handle Not approved for use in mobile or modular homesBTU Range: 67,758 - 180,688 Coal Pellet Cap: 160 lbs. Depth with blower: 50-1 2 Depth without blower: 32-1 4 Firebox depth: 29-3 4 Firebox height: 24-1 2 Firebox width: 18-1 2 Fuel Type: Wood Coal Heat outlet: 13 x 18 Heating Capacity: 2,000 - 3,000 Sq. Ft. Height: 51 Log Length: 28 Weight: 525 lbs. Width: 24-1 2Due to EPA and state regulations, we are not allowed to ship this to California, Oregon and to Washington State.