I’m a newbie for inserts. Looking at a used country Flame Fireplace Insert catalyst. The house has about 1100 square feet. It gets COLD in the house in fall, it has a lot of glass. Have any feedback about this? 1 Ft 11 Inches Tall 2 Ft 1 Inch Wide in the back 2 Ft 6 Inches Wide in the front 2 Ft 2 Inches Deep The Insert slides into the Fireplace 14-15 inches. Country Flame Fireplace Insert (catalyst). Heavy Fireplace Insert with Brass accents. 3 Speed Fan that plugs into an outlet. The buyer says all parts are here. The buyer says it works very well. Heavy Gauge Steel Construction 400 Pounds Max Burn Time: 10 Hours Max Log Length: 18" Thanks, Robert.