Armstrong Ceiling Tile,24 in L,24 in W,PK12 680

30-Year Limited System Warranty Against Visible Sag, Mold, and Mildew Material Mineral Fiber Color White Standards ANSI/ASHRAE/USGBC/IES Standard 189, ASTM E1264 Classification Type III, Form 2, Pattern C E Fire Class A, ASTM E84, California Department of Public Health CDPH/EHLB/Standard Method Version 1.2, 2017, CAN/ULC S102, GREENGUARD Gold Certified Application Libraries, Music Rooms Series Mesa