Our Innsbrook Direct-Vent inserts feature optional liners and hand-painted ceramic fiber logs, nestled atop the variable flame height burner, to create an exceptionally attractive traditional fireplace. With inputs of 20,500 Btu, 26,000 Btu, and 28,500 Btu, the Direct-Vent insert’s unique Slope Glaze Burner produces natural flickering flames that dance and delight – warming your heart as it warms your soles.