Specially designed energy efficient fans are of induced-draft axial type with adjustable pitch. Material chosen are non- corrosive of plastic, FRP or aluminum alloy. The high efficiency design ensures low running cost and the lowest possible noise level. Fan blade pitch is adjustable and dynamically balanced.

Specially designed energy efficient fans are of induced-draft axial type with adjustable pitch. Material chosen are non- corrosive of plastic, FRP or aluminum alloy. The high efficiency design ensures low running cost and the lowest possible noise level. Fan blade pitch is adjustable and dynamically balanced.