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Long cased fans available with galvanised steel casings flanged both ends. Impellers are aluminium alloy aerofoil section, adjustable pitch to enable precise duty point selection. Motors are I.E.C standard frame motors IP55 enclosure class, class F insulation with class B temperature rise. A duct mounted terminal box is provided on standard long cased fans for normal ventilation applications. Standard fans are single speed 400V-3-50Hz. 230v-1-50Hz also available.
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