N/A Class F Insulation, Class B Rise At Full Load (4)All Cast Iron Construction (Steel Frame & Fan Cover On 140 Frame)Corrosion Resistant Mill & Chemical Duty PaintStainless Steel Nameplate (with CE Mark) & Zinc Plated HardwareShaft Slinger On Pulley End For IP54 ProtectionPrecision Balance (< 0.08 In/Sec Vibration)40ºC Ambient, NEMA® Design B Performance (4)Regreasable Bearings 180 Frame & Up, Lifting Provisions 180 Frame & UpDouble Shielded Bearings 140-360, Open On 400-440Oversized Conduit Box - 1 Size Larger Than NEMA StandardCast Iron Inner Bearing Caps 180 Frame & LargerField Convertible To F2 Mounting 180 Frame & LargerCondensation Drains With Plastic PlugsConversion Kits: C&D Flanges, Canopy Kits (except 320-360)All non-Emerson Electric Co. marks shown within this document are properties of their other respective owners