Size Available: 4′ x 9′ and Custom Thickness: 1/2″ Core Density: 5.3lbs per 10.76 sq. ft. NRC: 0.45 Face Type: Ironed Smooth Face Core Color: TH1804, Quartz, TH442, Pewter, Savoye, TH1801, Beton, TH1802, Tango, TH1819, Velvet, Aubergine, Cello Blue,TH1806,Lake Green, Aqua, Field, TH1818, TH1816, Lemon, TH1815 and special order FSI: Class A Flame Spread Index DATA SHEET: 1/2″ PolySorb Data Sheet