The 864™ ST GreenSmart (GS) Winthrop is one of Avalon's newest 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 864 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. And now the 864 TRV GS come standard with the very popular accent light for an added glow when the fireplace is on or off really showcasing the fireplace in every setting. The GreenSmart Intermittent Pilot Ignition (IPI) which allows you to run your fireplace in either standing pilot mode - where the pilot flame stays on which is ideal in really cold climates where it is important to maintain a draft for proper operation, or in the electronic ignition mode (GS), where your pilot flame goes out when you turn off your fireplace saving you precious fuel and money. This makes the 864 ST GS one of the most “Green” fireplaces you can own. The 864 ST GS gas fireplace allows you the option of adding the revolutionary “GreenSmart” modulating remote control. This “ultimate” hands free control gives you the ability to control virtually every function of the fireplace from the comfort of your couch. You control the flame and heat output manually, run the fireplace on thermostat mode or set your fireplace to the ”Smart” mode. The “Smart” mode automatically modulates the fire and heat up and down to maintain the beauty of the fire and room temperature. Most fireplaces only have the ability to turn the flame on and off trying to maintain the room temperature with the “Smart” mode your room will stay at a more constant temperature and you will be able to enjoy the beauty of the fire longer using the same amount or less fuel (watch the GreenSmart video link below). The 864 ST GS can be personalized for each room or home décor. Choose from something as simple as the basic grill to eighteen different face and grill options in a choice of textured finishes. Add different interiors to your fireplace. Choose from reversible straight brick/ herringbone pattern, diamond mosaic/stucco or the contemporary Stainless Steel liner. Complete the interior transformation with one of the three beautiful andirons adding even more realism to your gas fireplace. Finally complete your installation by adding a quiet convection blower that is ideal for circulating the fireplace warmth quickly and evenly throughout the room increasing the overall efficiency of the fireplace.The 864 ST GS also allows to the ability to add the Power Heat Duct Kit to move heat to an adjoining room – up to 25 ft away. Practical, efficient and beautiful - The 864 ST GS gas fireplace makes the ideal fireplace solution to any home.