High Airflow Rectangular Duct Vent Fan from China Suppliers - Reliable Factory Quality for Optimal Performance
📦 Product Overview
⚙️
1. 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.
📏
2. The fans are available in nineteen different sizes based on the diameter, ranging from 180mm to 560mm. The series offers air volumes from 160 to 9100 cubic meters per hour and total pressures from 73 to 570 Pascals.
3. Noise Control Options: To meet the noise requirements of different environments, the fans are available in two types:
- Standard type: All components are made of galvanized steel sheets formed by seaming or riveting.
- Silencing type: The fan part is made of galvanized steel sheets formed by seaming or riveting, and the casing is lined with sound-absorbing cotton.
⚡
4. The fans can be equipped with variable frequency motors and controllers to achieve stepless speed regulation. It is recommended to lock the frequency adjustment range between 25Hz and 50Hz. To meet the needs of explosion-proof environments, the fans can be made into explosion-proof models with an explosion-proof grade of EXdIIBT4.
🏢 Product Application
Fans can be widely used for ventilation and air exchange in hotels, restaurants, conference rooms, office buildings, public toilets, shopping malls, etc.
❓ Frequently Asked Questions
What are the primary features of the GDF series centrifugal duct fans?
They feature multi-blade centrifugal impellers, horizontal air intake/exhaust, and square connectors for direct duct integration, offering low noise and long service life.
What is the range of air volume and pressure for these fans?
The series provides air volumes ranging from 160 to 9100 m³/h and total pressures from 73 to 570 Pascals across 19 different sizes.
What is the difference between the Standard and Silencing types?
The Standard type uses galvanized steel sheets, while the Silencing type includes an additional lining of sound-absorbing cotton in the casing for enhanced noise reduction.
Can the speed of the fan be adjusted?
Yes, the fans can be equipped with variable frequency motors and controllers for stepless speed regulation, ideally between 25Hz and 50Hz.
Are there options for hazardous or explosive environments?
Yes, we offer explosion-proof models with a certified grade of EXdIIBT4 specifically for high-safety requirements.
Where are these duct fans typically installed?
They are ideal for commercial and public spaces such as hotels, restaurants, office buildings, shopping malls, and conference rooms.