Brighter visual with 20% more light reflectance than vinyl-covered gypsum. Durable – Water-repellent, Washable, Scratch-resistant, Soil-resistant. Smooth surface meets USDA/FSIS guidelines for use in food processing areas. Square edge detail allows for quick and easy cutting of panels. Installs in Armstrong® Prelude 15/16-in grid system. Covers 64-sq ft per carton (16 pieces per carton). Acoustical (CAC=33). Class A fire rating. Common size: 24-in x 24-in x 5/8-in. Armstrong Ceilings 24-in x 24-