Boston Acoustics P450 28-Inch Aluminum On-Wall Speaker (Discontinued by Manufacturer) 3-way on-wall speaker Dual 4.5-inch neodymium magnet woofers, 1-inch Vrh.O. aluminum dome tweeter with AMD, 4.5-inch neodymium magnet midrange Ideal for use with flat screen TVs, screen sizes 50 inches and larger 5-way binding posts Silver and black grilles included