- Main structure made from galvanized steel sheet.
- Inside lined with 50mm thick acoustic insulation.
- Single-phase electric motor, with IP44 or IP20 grade ingress protection, class F insulation and automatic thermal protection. Suitable for speed regulation.
- Backward-curved impeller blades on the 125-250 mm models.
- Double inlet forward-curved impeller blades on the 315-450 mm models.
- Protection guards
- Collars for connecting to the duct