Patent ID: 7879433

Claim:
A coated panel comprising: a substrate having a thickness in the range from about 0.5 inches and 0.75 inches, a density in the range from about 1.25 to about 1.7 lbs/board foot and a porosity in the range from about 83.0% to about 90.0%; the substrate having perforations extending through a top surface thereof, the perforations being present in an amount from about 500 to about 1750 perforations per square foot, wherein the average perforation diameter is in the range from about 0.035 to about 0.055 inches; a coating layer applied to the top surface of the substrate; and a coarse particle layer applied on top of the coating layer, the coarse particle layer consisting essentially of coarse particles having an average particle size in the range from about 250 to about 750 microns, the coarse particle layer being present in an amount in the range from about 45 to about 80 grams per square foot; wherein the coated panel has a noise reduction coefficient in the range from about 0.575 to about 0.725 and a light reflectance value in the range from about 0.82 to about 0.88.