Optima Ceiling Tile, 48 in W x 48 in L, Square Tegular, 9/16 in Grid Size, 6 PK, Armstrong World Industries, Mfr#: 3256B

Ceiling Tile, Edge Type Square Tegular, Grid Size 9/16 in, Overall Length 48 in, Overall Width 48 in, Ceiling Attenuation Class 30, Fire Retardant Class Class A, Light Reflectance 88 Percent, Noise Reduction Coefficient 0.95, Recycled Content 71 Percent, Texture Fine, Application Libraries, Color White, Coverage 128 sq ft, Features 30-Year Limited System Warranty Against Visible Sag, Durable, Material Fiberglass