Built - in Base More Compact than Universal Mantels Fits White Mountain Hearth Fireplaces without Modification Proudly Made In USABase Depth: 16.63 Base Height: 3.25 Base Width: 41 Cabinet Depth: 38 Cabinet Width: 49.88 Corner Depth: 33.88 Height: 41 Inside Depth: 30.25 Opening Height: 30.5 Opening Width: 31 Top Depth: 32.63 Top Width: 53.63Fireplace insert not included.