This contemporary fireplace is made of glass reinforced concrete in a taupe finish. The Mason features a new slim design (under 12 depth) which makes it suitable for any size room and its flat side design allows baseboard trim to fit flush to cabinet. Firebox Features: 33 self-trimming widescreen electric firebox Patented, life-like flame effect Inner glow logs molded from wood logs for incredible realism On-demand heat with thermostat control warms a room or area of up to 400 sq. ft. Interior light and flame speed control Flame operates with or without heat 2?? / hour with flame only 7?? / hour with flame and heat* 120 Volts / 980 Watts / 3,345 BTU *Based on average national residential electricity rates. Rates vary. Assembly Required.