Aspen Timbers features elegantly crafted white birch logs with an open view ember bed for a beautiful warm glow Hargrove's Radiant Heat series vented log sets allow you to have the most realistic looking log set with all of the heat you want. Radiant Riser technology directs the heat output forward Revolutionary molding process gives log detail previously unattainable with Ceramic Fiber Logs Ceramic Fiber material and Hargrove's Radiant Riser gives much greater heating efficiency than other vented log sets Heat comparable with vent free sets, with realistic fire and ember bed not possible with vent free units