Armstrong Ceiling Tile,48 in L,24 in W,PK8 302A

30-Year Limited System Warranty Against Visible Sag, Mold, and Mildew, Durable Material Mineral Fiber Color White Standards ASTM E1264 Classification Type III, Form 2, Pattern C E Fire Class A, ASTM E84, CAN/ULC S102, UL Labeled Application Corridors, Offices, School/Classrooms Series Tundra