Groove Wooden 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 a 12 mm thick High Density Fiberboard (MDF) sheet with a finish laminated to its front face and black acoustic felt adhered to its rear face. Groove Wooden Acoustic Panels are manufactured with a rabbit and notch joint. Thanks to the precision of the rabbet and notch a perfect finish is achieved when they are installed.