Sure Heat VFLBS42 Surefire Vent-Free Low Profile Stainless Steel Firebox with Heat Deflecting Mantel Guard and Screen, 42-Inch Superior Stainless Steel construction with a flush face and non-obtrusive side circulation Made for outdoor spaces, this unit features a full 42" wide opening, a low profile hearth and traditional herringbone firebrick liner The opening dimensions required for this unit are: 47"width; 40.15"rough opening height; 38"finished height; 21.5"depth Complete with a screen and a heat deflecting mantel guard to protect your mantel. Adjustable flame heights Works with both Natural Gas and Liquid Propane fuel sources. Smokeless - Great for outdoor entertainment and parties, with no messy ashes to clean up