Technical Specification 35 "/ 36 " Aluminum Air Ventilator Model Standard Model Standard Diameter 42 " (965.2 mm) Pointer MOC 9.5 mm Ã?? EN-8 with Electroplating Neck / Throat Diamter 35 " (900 mm) Supporting Bush MOC Green Oilon No. of Vanes (Blades) 48 Vanes Center Shaft MS 19 mm Ã?? with Nickleplating Height 19.5 Inch (487.5 mm) Inner Arms (Pipe) MS with Electroplating Base Ring Stainless Steel (Jindal Make) Outer Arms MS with Electroplating Top Cover Stainless Steel (Jindal Make) Center Pipe MS 32 mm with length 290 Electroplating (30 mm Nut) Top Sheet MOC Aluminum 1.2 mm Thickness NetWeight 14.2 Kgs (Approx.) Vanes MOC Aluminum 0.5 mm Thickness (Hindalco Make) Packing As per Box Packing Bottom Ring Aluminum 1.5 mm Thickness, C-Channel, (Hindalco Make) Vanes Size 435 / 70 Rotation Bush Support with Green Oilon Miscellaneous items like Nut, Bolt, Washer, etc. MS with Electroplating or Zinc Plating Galvanized