The booster centrifugal duct fan listed here carries 220 V, 380 V, 440 V, air flow 500 – 2000 m³/h, documented exactly as the manufacturer publishes it. Made by Jinan Shuangyi Environment Engineering Co., Ltd. (19 years on the platform, typical reply ≤1h). Send your target quantity and destination for a firm quotation with current lead times.
Key Features of This Booster Centrifugal Duct Fan
- Model Number: SWX-4 inch Duct Ventilator
- Power Source Type: Corded Electric
- Voltage: 220 V, 380 V, 440 V
- Air Flow: 500 – 2000 m³/h
- Material: Aluminum, Stainless Steel, FRP, GRP
- Blade Material: FRP
Technical Specifications
| Duct Diameter | 4 in, 8 in, 10 in, 12 in |
|---|---|
| Mounting | Duct Fan |
| Voltage | 220 V, 380 V, 440 V |
| Motor Type | DC Motor, Brushless Motor, Brush Motor |
| Speed | 800 RPM, 1 000 RPM, 1500 RPM, 2000 RPM |
| Material | Aluminum, Stainless Steel, FRP, GRP |
| Blade Material | FRP |
| Power Source Type | Corded Electric |
| Warranty | 3 Years |
| After-Sales Service Provided | Free Spare Parts |
| Customized Support | ODM, OEM |
| Noise Level | 35–39 dB |
| Place Of Origin | Shandong, China |
| Brand Name | Shuangyi |
| Model Number | SWX-4 inch Duct Ventilator |
| Applicable Industries | Food/Lab/Greening House |
| Product Name | Duct Fan |
| Motor | Copper Motor/IP55/IP65 |
| Feature | Low Noise Power Saving |
| Air Flow | 500 – 2000 m³/h |
| Certification | CE/ISO9001 |
| Brand | Shuangyi |
| Noise | 30-65 Db (A) |
| Color | Customers’ Requirements |
| Selling Units | Single item |
| Single Package Size | 80X50X40 cm |
| Single Gross Weight | 25.0 kg |
Product Details
FRP Stainless Steel Centrifugal Duct Exhaust Fan
– Durable, Efficient Ventilation for Industrial Spaces
Product Overview:
Our centrifugal duct ventilator is a high – performance ventilation solution meticulously engineered to meet diverse industrial and commercial air – handling requirements. Available in two premium materials, Fiberglass Reinforced Plastic (FRP) and stainless steel, this ventilator offers durability, corrosion resistance, and reliable operation.
Key Features:
-
Durable FRP Casing: Lightweight yet strong, resistant to corrosion, acid, alkali, and moisture.
-
High Airflow Efficiency: Optimized blade angle and aerodynamic design ensure large air volume and low energy consumption.
-
Low Noise & Vibration: Precision-balanced impeller reduces operational noise and enhances stability.
-
Flexible Installation: Suitable for horizontal or vertical duct mounting; supports both blowing and exhaust functions.
-
Wide Application: Perfect for high-humidity, high-temperature, and chemically aggressive environments.












| Item | value |
| Voltage | 110-240V |
| Blade Material | Plastic |
| Customized support | ODM, OEM |
| Mounting/Installation | Duct Fan |
| Place of Origin | China |
| Brand | Shuangyi |
| Model Number | 4 inch Grow Tent Ventilation |
| Warranty | 3 years |
| After-sales Service Provided | Free spare parts |


Jinan Shuangyi Environment Engineering Co., Ltd. (hereinafter referred to as "Shuangyi") is a comprehensive enterprise that integrates science and technology, engineering, and trade. Our core product lines include:
– Cooling towers and FRP (fiber-reinforced plastic) products
– Blowers, water tanks, ventilators, and associated pipelines
– Fireproof valves, fume extraction valves, and laboratory equipment
– Fans and specialized FRP laboratory facilities
– Medicine cabinets, vessel lockers, reagent storage racks, and related organizational solutions
– Enwinding pipes and tanks, corrosion-resistant materials, and FRP components such as retainers and pantiles
– Daylighting covers, rot-proof facilities, and bodywork components
– Automotive coverings, fittings, battery-powered vehicles, and mobile machinery shop accessories
– Engine room covers, hubcaps, air deflectors, and architectural decorative materials
– Pultrusion wood, furniture, SMC products, RTM (Resin Transfer Molding) products, and garbage bins
– Textile machinery, air conditioning units, windscreen machines, central air conditioning systems, and engineering machinery
– Composite materials for various industrial applications
Our company is equipped with advanced production facilities and has been honored as a "Provincial Contract Trustworthy Enterprise" by the Shandong Provincial Government. We have successfully obtained certifications from Switzerland's SGS, ISO9001 International Quality Management System, and ISO14001 Environmental Management System.
With substantial capital strength, cutting-edge technology, and advanced management practices, we adhere to the principle of "market-oriented operations, quality-driven success, innovation, and sustainable development." We are committed to continuous improvement and aim to establish a modern corporate image.
Shuangyi currently operates seven subsidiary companies (branches) and an FRP Research Institute, including Dezhou FRP Plant, Shuangyi Cooling Tower Co., Ltd., Shuangyi Fan Co., Ltd., Shuangyi Refrigeration Installation Co., Ltd., Yaxing Textile Machinery Manufacturing Co., Ltd., and Meihua (Dezhou) Industrial Company Limited. Among these, Dezhou FRP Plant serves as our core subsidiary, renowned for its early establishment in 1984, large scale, and high-precision products.
In the face of challenges in the 21st century, Shuangyi continues to seize opportunities presented by China's accession to the WTO. We uphold the corporate spirit of "unity, truth-seeking, high-quality standards, and innovation," striving to create a brilliant future with our new corporate image and superior product quality.
1. Q: Are you Trading Company or Manufacturing Factory?
A: We are both manufacturer trading and company. We have our own factory for almost 40 years, and we have better service of overseas customers.
2. Q: I am interested in your products, could I get sample for free?
A: We can supply a few pieces FREE samples if we have some in stock, and you only need to pay the freight cost by yourself.
Welcome to send your inquiry for FREE samples!
3. Q: How about the Delivery time?
A: 10-15days after receiving the deposit based on the MOQ. Normally, 30-35days to finish the order for a 20ft container.Welcome to ask for the detailed delivery time according to your order quantity!
4. Q: How can you guarantee the product quality?
A: We have the quality control system ISO9001:2015, and it's been followed strictly. We also have the professional QC team,and each our package worker will be in charge of the final inspection according to the QC instruction before packing.
5. Q: What is about the payment terms.
A: Basically, the payment terms are T/T, L/C at sight. Western Union, Alipay.
6.Q: Can you do OEM for me?
A: We accept all OEM orders,just contact us and give me your design,we will offer you a reasonable price ASAP.
Purchasing Notes
1. If you knows little but only the volume or area of your warehouse, plant or workshop, like their length, width, height, please make sure that contact us in time. By doing so, our engineers can design the specifications and quantity of the product in your need.
2. If there is no specification parameter that required in the parameter table, please tell us your requirements and we will give you a satisfactory designing scheme.
3. If you have confirmed our products, please place an order and then make payment. After that, we will arrange delivery as soon as possible. Without change in the order before our delivery, we will give you an exquisitely prepared present.
4. If there is any difficulty in transportation, please contact us immediately and we will give you a satisfactory plan to save freight as much as possible.
Ordering and Pricing
- Minimum order quantity: 1 piece
- Volume pricing:
- 1–4 piece: US $60.5 / piece
- 5+ piece: US $56 / piece
- Ships from: China
- Customization: OEM and ODM accepted on qualifying volumes.
Frequently Asked Questions
What is the minimum order quantity for this booster centrifugal duct fan?
The standard minimum order quantity is 1 piece. Trial orders can usually be arranged for buyers evaluating the product before a full production run.
What warranty is provided?
The manufacturer provides a 3 Years warranty. Spare parts and technical support remain available after the warranty period.
Which certifications does this booster centrifugal duct fan carry?
It is supplied with CE/ISO9001 documentation, which covers the requirements of most import markets. Additional test reports can be issued on request.
Can the booster centrifugal duct fan be supplied for my local voltage?
The standard configuration is 220 V, 380 V, 440 V. Alternative voltage and frequency builds are available when specified at the time of order.
Do you accept OEM or custom branding?
Yes. Custom logo, colour, packaging and specification changes are accepted on qualifying order volumes. Send your artwork and technical requirements with your enquiry.
How long does production and delivery take?
In-stock configurations typically ship within 7–15 days. Customised or large-volume orders are usually produced in 25–35 days, confirmed on order.
About the Manufacturer
This product is produced by Jinan Shuangyi Environment Engineering Co., Ltd., based in China. The company 19 years as a verified Alibaba.com supplier, operates its own manufacturing. Browse the full Jinan Shuangyi Environment Engineering Co., Ltd. range on HVACR Nexus.
See more in Duct Fan Boosters on HVACR Nexus.
























