—Backward curved，8 blades，direct driven or belt driven
—Series TE：size from 180 to 450mm(impeller diameter)
Air volume: from 400 to 12，000m3/h
Ps max=1，700Pa
The TE impeller is manufactured in glass reinforced polyamid
—Series NPL：size from 250 to 1，400mm(impeller diameter)
Air volume: from 500 to 135，000m3/h
Ps max=2，800Pa
—Plug fan with airfoil blades,10 blades，direct driven or belt driven
—Size from 250 to 1，600mm(Impeller diameter)
—Air volume from,2,000 to 220，000m3/h
—Ps max=3，100Pa
—Advantage：Higher efficiency, lower noise
—Steel / Aluminum / Stainless steel impeller
