The Builder Series mantels are compact fireplaces that complement a wide range of decorating styles. These versatile mantels are perfect for spaces that demand efficiency, defined by a clean, sleek design. Use them in any space, from a spacious living room to a cozy family room or intimate den.Material meets the requirements for non-combustibility in accordance with ASTM E-135. High definition, crisp details. Adjustable height. Fast, easy installation. Material is sealed from the factory and requires no further finishing. Supplied in 3 piece.Complete Mantel Weight: 50 lbs Crated Weight: 65 lbs Mantel Leg Weight (Each): 10 lbs Mantel Leg Width: 6 Mantel Projection: 4 Mantel Shelf Projection: 6 3 4 Mantel Shelf Weight: 30 lbs Mantel Shelf Width: 55 11 16 Mantel Width: 49 Mantel with Shelf Height: 41 Maximum Opening Height: 35 Maximum Opening Width: 37 Minimum Opening Height: 22 Minimum Opening Width: 19 Number of Pieces: 33 4 wide x 1 deep rabbet to accommodate a marble, stone or other noncombustible filler panel material insert (not supplied with mantel).