... coating Size&Color can be adjusted with customers' request Air DiffuserSupply or return air applications.Complete assembly from extruded aluminium sections.Rigid,heavy ... :Manufacturer Product/Service (We Sell):Air grille,air diffuser,egg crate grille,air damper,return air grille,air vent,ceiling diffuser,air inlet,air outlet,aluminum grille,aluminum diffuser Number of Employees ...