Powerful enough to heat up to 2200-feet, keeping your home warm all season long. And, though less bulky than similar designs, the huge hopper on this stove can hold 120 pounds of pellets (three bags), allowing it to burn up to 75 hours between reloading. It is powered by our one-touch, auto-start igniter and our proven, user-friendly control board for quick and easy operation just press ON and choose your desired heat setting. The viewing glass with air wash gives a great view of the fire, and a fresh air hook-up kit is included. The stove is also Mobile Home approved. Large door window measures 9 In. x 9 In.