Tile, Ceiling, Ultima Series, Mineral Fiber, White, Beveled Tegular Edge, 0.75 Sound Absorption(NRC), 35 Sound Blocking(CAC), 90% Light Reflectance, Temp Range 32 to 120F, 15/16 in Grid, 24 LG x 24 WD x 3/4 TK in, ASTM E1264