The Keystoker A-120 Add-On Furnace is made from heavy gauge American steel and has an insulated metal jacket. It burns anthracite rice and buckwheat coal. All surfaces that are in contact with hot gases are wiped with air from convection blower to exhaust maximum amount of heat from furnace.
Comes in right and left hand models.
Furnace is heated with the patented flat grate stoker. Comes complete with necessary controls and thermostat.