1) BTU:30,000; 2) Efficiency:82%; 3) Ceramic glass, SIT valve, firebox, burner, gas logs, black louver, blower; 4)N. ... BTU; 3) Efficiency: 82%;4) Fuel: Natural gas/LPG5) Ceramic glass, SIT valve, firebox, burner, gas logs, black louver, blower6) Yellow ... Beautiful fire with glowing logs and embers 3) Ceramic safety glass 4) Adjustable flame control 5) Louver 6) Vertical or horizontal termination ...