® Hot Blast Warm Air Furnace Model 1400 Heat Outlets Raised & Tapered Large Capacity Firebox Thermo Plastic Thermostate Knob Heavy-Duty Cast Iron Grates Easy Close Door Clamp Firebrick Liner Automatic Draft Control Blower Cast Iron Feed and Ash Door w/ Deeply Full-Length Ash Pan Channeled Groove for Ceramic Gasket...