... , perforated acoustic board, groove acoustic panel,wooden Perforated Acoustic Panel 1.FeatureThis product is ... density fiberboard(MDF).2 )Back of board : Sound Fiberglass Mat3) surface finishing : Wooden Veneer, Melamine and Painting.4) Patterns ... : perforation, groove, square 3. Specification 2440x197mm Thickness : 12mm, 15mm,18mm Wooden acoustic board