Singer Safety 8' x 4' x 1" Noise Reducing Quilted Surface Fiberglass Screen, Plain Backing, Gray. Panel has bound hems, nickel plated brass grommets for easy fastening. Single faced material is nominally 1" thick. Includes 1 Wall Panel. Rated Class 1 building material per ASTM E-84 Tunnel test for flammability. Up to 12dB noise reduction. Tough, easily wiped, oil, grease, and mildew resistant outershell.