Empire Loft small direct vent gas fireplace insert - Natural Gas. The unit uses a 20,000 BTU Slope Glaze Flair Burner that has variable flame height and realistic black porcelain liner. A large heat-resistant ceramic glass panel provides a beautiful viewing area and a built-in automatic Blower works quietly and effectively to circulate heated air for good heating capability. Includes: Black Porcelain Liner, Burner, and Blower. Features: Small direct vent gas fireplace insert. Fuel Type: Natural Gas. Millivolt control. 20,000 BTU Slope Glaze Flair Burner features variable flame height. Realistic Black porcelain liner. Built-in automatic Blower quietly and effectively circulates heat. Convenient slide-on vent plate. Remote ready - Remote is not included. Minimum Fireplace Opening Requirements:. Height - 18.37". Front Width - 27.5". Rear Width - 17.25". Depth - 12.75". . Dimensions: 28" (W) x 12.75" (D) x 19.75" (H) Required: Must Choose Following Add-on's to Complete This Unit (Not Included; Order Separately): Decorative Metal Frame:. . Decorative Metal Frame for Insert, 3-Sided, 1-Piece (DS25661BL). Surround with Barrier Screen:. Decorative Metal Surround with Barrier Screen for Insert, 4-Sided (SQ2562BL) (SQ2562BLSS). Custom Surround 3-Sided, Black (CS3SIDED). Custom Surround 4-Sided, Black (CS4SIDED) Decorative Front with Barrier Screen:. Decorative Front with Barrier Screen, Lancaster (DVFQ25HBL) (DVFQ25HHP) (DVFQ25HSS). Decorative Front with Barrier Screen, Eclipse (DVFQ25RBL) (DVFQ25RHP) (DVFQ25RSS) Shows surround (not included; order separately)