... 50*15, 45*20.,etc 3, Thickness: Aluminum grid ceiling~~1), Material: Aluminum 1xxx, 3xxx, 5xxx2), Specification(mm ... , Product Quality CertificateApplication: Airport, subway, bus station, commercial center, hotel restaurant, hospital, office, hallway, bedroom, kitchen, ... installation.Welcome to contact us. Open cell ceiling Product:Open cell Ceiling / GrillesMaterial:high quality Aluminum alloySize:10 ...