The CBHD4 See Thru direct vent fireplace features two different firebox/burner options, a log burner (CBHD4ST) & a linear topaz glass burner (CBHD4STG). The CBHD4 features 30,000 BTU’s, a massive 2,023 sq. in. viewing area and electronic ignition with battery back-up. Optional designer fire art, media enhancement kits and decorative panels are available to match any room in your home.