... Aluminum , Film plate ,Roller coating, Galvanized steel and mirror aluminum ,etc . Suspended ceiling:1. The standard sizes see the chart below . ... materials : Aluminum , Film plate ,Roller coating, Galvanized steel and mirror aluminum ,etc .- Thickness : Form 0.50mm to 1 ... silver , grey ,black, etc . STANDARD SIZE FOR SQUARE CEILING ItemDescriptionWidth (mm)Length (mm)Thickness (mm)Hight (mm)Treatment ...