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: 40 lbs Crated Weight: 55 lbs Mantel Leg Weight (Each): 10 lbs Mantel Leg Width: 7 Mantel Projection: 1 7 8 Mantel Shelf Projection: 1 7 8 Mantel Shelf Weight: 20 lbs Mantel Shelf Width: 56 Mantel Width: 56 Mantel with Shelf Height: 43 Maximum Opening Height: 36 Maximum Opening Width: 42 Minimum Opening Height: 23 Minimum Opening Width: 24 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).