T.box material:Aluminium (die cast) 160, cast iron 180, 200, mild steel for 250 & 315 Frames, Fan material:Cast iron for 160, aluminium for 180, 200, mild steel for 250 & 315 Frames, Paint & shade:NC base RAL 5012 shade up to 200, Epoxy base RAL 5012 above 200 frame.