... 50*15, 45*20.,etc 3, Thickness: Aluminum grid ceiling~~1), Material: Aluminum 1xxx, 3xxx, 5xxx2), Specification(mm): ,size ... Product Quality CertificateApplication: Airport, subway, bus station, commercial center, hotel restaurant, hospital, office, hallway, bedroom, kitchen, toilet, etc ... ceiling Product:Open cell Ceiling / GrillesMaterial:high quality Aluminum alloySize:10*40, 15*50mm,20*45mm,length: ...