... 50*50mm 2, Height* Width: 40*10, 50*15, 45*20.,etc 3, Thickness: Aluminum grid ceiling~~1), Material: Aluminum 1xxx, 3xxx ... center, hotel restaurant, hospital, office, hallway, bedroom, kitchen, toilet, etc.,Installation method: ( For reference only)1), Buckle the hangers to ... / GrillesMaterial:high quality Aluminum alloySize:10*40, 15*50mm,20*45mm,length:1.85-2mSeparation dis:75*75mm,100*100mm ...