DIDW Centrifugal Blower Fan

DIDW (double inlet, double width)

Key Features:

  • AMCA Air Certified Ratings Seal.
  • AMCA Sound Certified Ratings Seal for both inlet and outlet sound.
  • Corrosion resistant, electrostatically applied and baked powder coatings.
  • High efficiency, low noise.
  • Damper or VSD controllable.

DIDW centrifugal blower fans are designed for efficient and reliable air movement in various commercial and industrial applications. These fans feature a double-inlet, double-width design with two impellers. That draws in gases from the front and pushes them out the sides for effective ventilation and exhaust.

The DIDW model is an excellent choice for exhaust air, supply air, filtration, heating, air conditioning, and industrial process applications. It provides high-quality air movement, with double-width centrifugal fans designed to ensure efficient and reliable operation. Our products are made with state-of-the-art equipment and undergo rigorous quality control testing to ensure a trouble-free startup.

Additionally, centrifugal double-width blowers offer backward-inclined wheels for optimal performance. These blowers are easy to install and high efficient, making them ideal for supply or exhaust. Use in air handling units (AHUs) and industrial HVAC systems.


Specifications of the DIDW Centrifugal Fan:

  • Type of structure Direct drive
  • Available Sizes: 225–1250 mm
  • Shape: double inlet, double width.
  • Capacity: 1700 to 150000 CMH
  • Static pressure: up to 1600 Pa
  • Total efficiency: up to 79%
  • Total pressure: 152.44 mm
  • Drive loss low, medium high
  • Max operating temperature: 50 degrees
  • Available materials are stainless steel, mild steel, galvanized steel, and aluminum.

Motor Specification:

  • Motors are completely enclosed.
  • Motor voltage: 300/400/415
  • Ingress protection IP55
  • The motors are ICE designs.
  • Motor efficiency IE1, IE2, IE3, and IE4
  • Motor speed: 2–8 poles (750–3200 RPM)

Advantages of the DIDW Centrifugal Blower Fan:

  • Air handling units are developed for high efficiency. Reduced operating torque with aluminum wheels
  • The DIDW fan is suitable for supply or exhaust applications in the AHU (air handling unit).
  • DIDW models target the class 1 performance range for backward-inclined fans, as defined by the AMCA pressure class.
  • The housing is constructed of galvanized steel with zinc GSM275 for durability.
  • The shaft of a DIDW fan transfers energy efficiently, ensuring durability and reliability. Regular maintenance and lubrication are necessary for optimal performance.
  • The fan’s backwards inclined wheel is constructed of aluminum, providing high efficiency with a low sound level.
  • Premium bearings, made with air handling quality, and an adapter sleeve collar lock. It ensures smooth operation and a superior grip.
  • A vibration analysis is a complete mechanical vibration analysis taken after assembly.

Suggested  Applications:

  • Commercial and residential buildings
  • HVAC Systems
  • Industrial Processes
  • Cleanrooms
  • Data Centers
  • Commercial Kitchens
  • Warehouse Ventilation
  • Laboratories
  • Sports Arenas

Standards and Certificates: 

  • AMCA Air and Sound Performance
  • CE Certified
  • UL Listed
  • CSA
  • FM
  • TU

Options and accessories:

A double-sided shaft allows for a motor mounting option to couple two fans in tandem. 

Scroll Support: This is especially true in the absence of an outlet duct connection.

Mounting style: spider bracket, non-rotatable, spider bracket, rotatable, pillow block, arrangement