High Airflow Rectangular Duct Vent Fan - Reliable China Suppliers & Factory with Optimal Performance
Product Overview
The GDF series of centrifugal duct fans feature either forward-curved or backward-curved multi-blade centrifugal impellers, with single-sided air intake. The fans are designed for horizontal air intake and exhaust, and the square air inlets and outlets can be directly connected to the air ducts. The fan motors are specifically designed for air conditioning systems, and the entire unit is characterized by low noise, smooth operation, and long service life.
Technical Specifications & Sizing
Sizes: 19 sizes (180mm to 560mm)
Air Volume: 160 – 9,100 m³/h
Total Pressure: 73 – 570 Pa
Standard Type
All components are manufactured from high-quality galvanized steel sheets formed through precision seaming or riveting processes.
Silencing Type
The fan unit is crafted from seamed/riveted galvanized steel sheets, with the casing internally lined with specialized sound-absorbing cotton for quiet operation.
Speed Control & Safety
Can be equipped with variable frequency motors and controllers for stepless speed regulation (recommended range: 25Hz–50Hz). Explosion-proof models available with an EXdIIBT4 grade.
Product Application
GDF series fans can be widely used for ventilation and air exchange across various commercial and public spaces:
Hotels
Restaurants
Conference Rooms
Office Buildings
Public Toilets
Shopping Malls
Frequently Asked Questions (FAQ)
Q1
What impeller types are available for the GDF series duct fans?
The GDF series features either forward-curved or backward-curved multi-blade centrifugal impellers with single-sided air intake.
Q2
What are the size and air volume ranges for these fans?
The series is available in nineteen different diameter sizes ranging from 180mm to 560mm, delivering air volumes from 160 to 9,100 m³/h and total pressures between 73 and 570 Pa.
Q3
What is the difference between the standard type and the silencing type?
The standard type is made entirely of galvanized steel sheets formed by seaming or riveting. The silencing type features the same galvanized steel fan structure, but adds internal sound-absorbing cotton inside the casing for noise reduction.
Q4
Can the fan speed be adjusted?
Yes, the fans can be equipped with variable frequency motors and controllers for stepless speed regulation, with a recommended adjustment lock range between 25Hz and 50Hz.
Q5
Are explosion-proof configurations available?
Yes, for hazardous environments, the fans can be manufactured as explosion-proof models compliant with the EXdIIBT4 grade.
Q6
How do the inlet and outlet ports connect to ductwork?
The fans are engineered for horizontal intake and exhaust, featuring square air inlets and outlets designed for direct connection to standard air ducts.