edge and grid choices, Humidity-resistant no sag performance and BioBlock paint to inhibit surface growth of mold and midew and Fire Guard options in an economical acoustical panel. Physical Date Materal:Wet-fomed mineral fiber Surface finish:Factory-applied vinyl latex paint Color:White NRC:0.55 CAC:Minimum 33 Light Reflectance:Minimum LR 0.85 Fire Resistance:B1(China Standard) Sag Resistance:RH70 Performance appropriate for relative humidity up to 70%, Temperaure up to 86°F Insulation Value:Average R factor (at 75°F) is 131(BTU units), 023(WATS units) Edge Detail:Square Lay-in, Angled Tegular, Beveled Tegular Size:600X600X7.5, 8, 9, 10, 12, 14, 15, 20mm 600X1200X12, 14, 15, 20mm Recommanded Suspension system:38*24 Exposed Tee grid systems