The I100 is the Industry’s largest wood burning fireplace with a full 50″ wide by 33″ tall opening. Its clean face design allows finishing materials to be applied right up to the edge of the firebox opening so there is no visible black steel. The distinctive refractory lining color and texture deliver the most convincing masonry look available in a factory-built fireplace today. Refractory patterns available are traditional brick in multi-colored earth tones and contemporary herringbone in dusky rose. Three distinctive door styles available as options. Heatilator Warranty.