Energy King wood/coal furnaces provide warmth, comfort and peace of mind during those cold winter months. Energy King models 360EK and 480EK are constructed of high-grade steel, 2,000-degree firebrick and heavy cast-iron grates and doors, and they feature fireboxes large enough to accept logs of up to 26 inches (480EK) or 21 inches (360EK). Energy King furnaces comply with UL391 test standards.Contact: (715) 720-94, www.energyking.com or sales@energyking.com.