Groove Wooden Slats Acoustic Panels have longitudinal grooves and slats, machined along the length of the panel. These panels are consisting of a laminate finished surface, base core board and black acoustic felt attached on the back. The base core board is an 12mm - 18mm thick Fiberboard sheet with a finish laminated to its front face and black acoustic felt adhered to its rear face. The groove acoustical Slats consist of panels made from acoustical fibreboards with linear perforations for excellent uniformity.Materials based on acoustic theory, remarkable sound-absorbing function, middle and low frequency sound-absorbing effects especially renowned.