Balmer Pre Cast Mantle: Easy Installation 3 Pieces: Metal brackets for easy attachment Primed, ready to paint or give it a special finish Inner sourrounds and Hearth pieces available: Hearths in 3 pieces: Sourrounds in 3 pieces Shipped within 24 hours Can be easily cut or trimmed to fit. Size: Width 77": Height 57": projection 10 1/4": Maximum opening of fireplace: 54" w x 45" h suggested hearth width: 74" Primed for paint or give it that special finish Ships within a few days. Use Marble or any other fireproof material as a surround to go between Mantle & fireplace opening. Normally 10" to 12" in average cases. No fireplace is too small to accept one of these mantles approx 200 lbs. Shown with common black Marble or Granite