Acoustic Panel Width 24 in Length 48 in Height 2 in Material Polyester Fabric Wrapped Fiberglass For Use With Impaling Clips Coverage 8 sq ft Characteristics Acoustically Absorptive Cloth Wrapped Compressed Fiberglass Panel with Reverse Mitered Edges for Mounting in Vertical or Horizontal Corners Suitable for Residential and Commercial Wall and Ceiling Applications Standards Flammability ASTM E84 Class I Includes Corner Impaling Clips