Designed by John Dimopoulos, director of Geoform, the ventless Zeta is shaped from high-frequency heated aluminum molded into an arching crescent and set on a 360-degree swivel base. The stainless steel firebox insert rests inside the shell. The outer surface is hand-wrapped in leather, with a choice of onyx, roast and amaretto colors. Overall, the unit measures 32 inches tall, 36 inches deep and 42 inches wide. EcoSmart Fire.