23 Inch LED Ventless Electric Space Heater Built-in Recessed Firebox Fireplace Insert This indoor recessed electric fireplace is completely vent free and perfect for any modern or traditional home. This is not a wall mount fireplace and a fireplace mantel is not necessary. This electric fireplace heater requires no ethanol, gas, chimney, mantel, insert space, stove or gel cans. Make converting wood or gas burning fireplaces simple. Smokeless Ventless Wall Recessed Built-in Electric Fireplace Space Heater, 3 settings of high, low, and no heat (only flame effect) - 1,500 Watts (400 sq. ft.) Auto shut off timer of 30 min. - 7.5 Hours. The power consumption with the flame effect only is 2.5W per hour. Overall Dimensions: 24.5"W x 8.5"D x 20"H, Weight: 23.0 lbs.