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High Airflow Rectangular Duct Vent Fan - Reliable China Suppliers and Factory for Efficient Ventilation Solutions

**Product Operating Conditions**, Experience reliable performance with our equipment designed to thrive under specific operating conditions. This unit operates effectively within a temperature range of -20 to 40℃ and maintains optimal functionality in environments with humidity levels below 90%. It is suitable for use in air conditions, provided the dust content does not exceed 100 mg/m³, Our power supply options accommodate various needs: for three-phase systems, we provide a voltage of 308V at 50Hz, while some models can operate on a single-phase supply of 220V at 50Hz. As a leading manufacturer in China, we take pride in supplying high-quality products directly from our factory to ensure exceptional performance and durability in diverse applications. Choose us as your trusted China suppliers for all your operational needs
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    Product Details

    Product Overview

    01
    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.
    02
    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.
    GDF Rectangular Pipe Fan
    03
    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.
    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, and more.

    Frequently Asked Questions

    Q1: What is the size range for GDF series centrifugal duct fans? A: The GDF series offers nineteen different sizes based on diameter, ranging from 180mm to 560mm.
    Q2: What is the difference between the standard and silencing types? A: The standard type is made of galvanized steel sheets, while the silencing type features a casing lined with sound-absorbing cotton to reduce noise levels.
    Q3: Can these fans be used in explosion-proof environments? A: Yes, the fans can be manufactured as explosion-proof models with an EXdIIBT4 rating for hazardous areas.
    Q4: Does the GDF fan support speed regulation? A: Yes, they can be equipped with variable frequency motors and controllers for stepless speed regulation, ideally between 25Hz and 50Hz.
    Q5: What are the typical air volume and pressure ratings? A: The series provides air volumes ranging from 160 to 9100 m³/h and total pressures from 73 to 570 Pascals.
    Q6: How are these fans installed in a duct system? A: They are designed for horizontal installation with square air inlets and outlets that can be directly connected to standard air ducts.

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