This traditional fireplace features an all-stainless exterior. Inside the fireplace, a special stainless steel version of our popular Harmony burner lights up the night with 50,000 Btu. The standard refractory liner and the required refractory Wildwood Log Set provide thermal mass to help minimize temperature fluctuations for your guests. Both the 36-inch fireplace and the 42-inch are rated at 50,000 Btu, and both have their valve and controls concealed beneath the fireplace floor.