864 See-Thru Gas Fireplace. With the combination of convective heat, radiant heat and reduced depth dimension the unit is ideal for small to mid-sized homes or for zone heating in bedrooms, living rooms and outdoor living spaces. The fireplace features 1728 square inches of high quality, high clarity, tempered glass with a removable safety screen. The realistic " wood like" flame, along with the heat output can be controlled by the convenient GreenSmart™ gas valve. The GreenSmart system features the split-flow Dancing-Fyre™ burner with Comfort Control™ that allows you to turn off part of the burner with the push of the button to really turn down the heat while maintaining the fire and glowing embers. This allows you to comfortably be able to use your fireplace year around.