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Reinforced Glass Fibre Base and Cowl. UV Stabilised. Colour RAl 7035 as standard. Other BS/RAL colours available on request. Fans:- RA 315-500 are Sickle bladed plate mounted axial flow and RA 560-710 are Aerofoil bladed powered by 100% fully speed controllable external rotor motor. Allmotors have class F insulation and IP54 enclosure. Sealed for life bearings. A terminal enclosure to IP54 is included. Motors have TK thermal protection facility. Temperature operating range is -40C up to 60C or 70C.
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