Stonehurst acoustical ceiling panels provide a low-cost, attractive way to finish a ceiling. The mineral fiber panels, with their square edge design, install quickly and easily. Exceptional light reflectance. They are ideal for renovations. Class A fire rated. Size: 2 Ft. x 4 Ft. x 9/16 In. Square edge. Medium texture. 8 pieces or 64 Sq. Ft. per case.