Centrifugal backward curved blade fans
The fans of the SI-BACK C series are designed for installations requiring modest air deliveries with relatively high pressures, in duct mounted applications. For instance: exhausting and filtering of industrial plants, pneumatic conveyance, transport of solid material mixed with air, sawdust and woodchips.
The fans of the SI-BACK B series are designed for installations requiring large air deliveries with low medium pressures, in industrial duct mounted applications for transport of very dusty air. For instance: sawdust, woodchips, granulated materials, excluding fibrous materials.