The advantages of the panel are voice absorbing, decoration, and fireproof. Acoustic products are widely used in hotel, dining room, shopping center, theatre, dancing room, cinema, station, meeting room, office, and airport. It has the super character of environmental protection. For the standard specification of the panels as follows: 1) Groove: 2,400 x 581/293/197mm2) Perforation: 1,200 x 600mmFor other pattern like squared, cross, diamond, oval, please contact us for more pictures and information. Packing: export carton producing area:China payment:T/T in advance, irrevocable L/C at sight