The Real Fyre® Millivolt Direct Vent Gas Insert combines dancing flames and glowing embers for the look of a wood fire with the convenience and efficiency of a modern gas heater. Direct-vent “sealed combustion” technology lets you turn down your central heating system and “zone heat” just the room you’re in. The large fire viewing area showcases the beautiful detail of the specially crafted Burnt American Oak or Split Burnt American Oak logs whether the fire is on or off.