RANGE : Powervent Exhaust Fan has the widest range to cover and suit your requirement from 230 mm (9") to 900 mm (36") in both single and three phases.
Regulators may be supplied for use with 230 mm, 300 mm, 380 mm, 450 and 600 mm single phase fans. They have four speeds, are metalclad and of auto - transformer type for 450 mm 1400 r.p.m. and 600 920 r.p.m. fans and of choke type for others....
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