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Die cast aluminium blades with aerofoil design. Poweredby a 100% fully speed controllable external rotor insulation & IP54 enclosure. Sealed for life bearings. A duct mounted terminal enclosure to IP54 is included. Motors have TK thermal protection facility. Galvanised casing flanged at both ends finished in two coats of corrosion resistant paint. Temperature operating range is -40C up to 70C.
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