This beautiful gas fireplace, complete with a mantel and base, is ventless, so you can warm your home without a lot of installation costs! The mantel and base are made of oak solids and veneer. It's a Comfort Flame model CGEFP33NRC. Fuel type is Natural Gas, 23,000-33,000 Btu/Hr. The fireplace without the base is 57"W x 23"D x 48"H so you could mount it on a hearth of your choice. With the base, the dimensions are 58"W x 29"D x 53.5"H. The insert alone is 34"W x 20"D x 33"H. The fireplace is just 4 years old, in like-new condition.