Centrifugal Box Fan
- Standard size 400mm
- Air volume flow rates up to 0.751 m3/s
- Static pressures up to 733 Pa
- Suitable for operating temperatures up to +60℃
- Light weight galvanised sheet steel casing
- Available in EC
Features and Benefits
Each unit is acoustically lined internally with Class O rated (BS 476 Parts 6 and 7) fire resistant acoustic foam lining minimising breakout noise levels.
To facilitate ease of installation, all models are designed for direct connection to the standard 20mm Doby flange system as a standard.
Aerodynamic fan design with a backward curved centrifugal impeller directly driven by an EC external rotor motor, provides low specific fan powers, increased efficiency and precise, stepless speed control.
Manufactured with robust 1.5mm thick pre-galvanised mild steel sheet, treated internally with 25mm thick fire resistant Class ‘O’ rated acoustic foam lining (BS 476 Parts 6 and 7).
The BLB range of units has EC external rotor motor fitted as standard. The IP44 motor contains sealed for life bearings. All motors are suitable for use in ambient air conditions up to +60 ℃. Electrical connection shall be via an IP55 terminal box mounted on the side for easy customer connection
High efficiency backward curved centrifugal impeller. Dynamically balanced to ISO1940-1 Grade G6.3 and directly driven by EC motors