The refrigeration fan listed here carries 12V, power source Electric, documented exactly as the manufacturer publishes it. Made by Beijing Zihang Dahui Electronics Co., Ltd. (7 years on the platform, factory-assessed). For a binding price and lead time, send the volume you need and where it ships to.
Key Features of This Refrigeration Fan
- Model Number: HD4020U12B
- Power Source: Electric
- Voltage: 12V
- Material: Plastic
- Blade Material: Plastic
- Speed: 12000RPM
Technical Specifications
| Voltage | 12V |
|---|---|
| Speed | 12000RPM |
| Type | High-Temperature Axial Fan |
| Material | Plastic |
| Blade Material | Plastic |
| Mounting Type | Free Standing |
| Bearing Type | Ball Bearing |
| Power Source | Electric |
| Warranty | 2 Years |
| After-Sales Service Provided | Online support |
| Customized Support | OEM, ODM |
| Place Of Origin | Beijing, China |
| Brand Name | Hang Da Hui |
| Model Number | HD4020U12B |
| Name | 40mm refrigeration fans dc fan |
| Size | 40x40x20mm |
| Motor Type | DC |
| Application | power supply |
| Operating Temperature | -10°C-+70°C |
| Storage Temperature | -40°C-+80°C |
| Certification | ce RoHS |
| Selling Units | Single item |
| Single Package Size | 4X4X3 cm |
| Single Gross Weight | 0.090 kg |
Product Details
silent 4inch fan 12v 40x40x20 4020 12v waterproof ip55 ip68 40mm refrigeration fans dc fan

| Moldel NO. | Rated Voltage | Oprtating VOltage | Rated Gurrent | Speed | Max.Air Flow | Max.static Pressure | Noise | ||
| VDC | VDC | A | RPM | m³/min | CFM | MMH2O | inH2O | dB | |
| HD4020L05B | 5 | 4.0-5.75 | 0.18 | 2200 | 0.14 | 4.9 | 4.4 | 0.17 | 29.2 |
| HD4020M05B | 5 | 4.0-5.75 | 0.23 | 2800 | 0.19 | 6.7 | 6.4 | 0.25 | 33.5 |
| HD4020H05B | 5 | 4.0-5.75 | 0.30 | 3200 | 0.24 | 8.4 | 9.1 | 0.36 | 38.8 |
| HD4020L12B | 12 | 7.0-13.8 | 0.09 | 6000 | 0.14 | 4.9 | 4.4 | 0.17 | 29.2 |
| HD4020M12B | 12 | 7.0-13.8 | 0.13 | 7500 | 0.19 | 6.7 | 6.4 | 0.25 | 33.5 |
| HD4020H12B | 12 | 7.0-13.8 | 0.18 | 9000 | 0.24 | 8.4 | 9.1 | 0.36 | 38.8 |
| HD4020U12B | 12 | 7.0-13.8 | 0.30 | 12000 | 0.29 | 10.2 | 12.4 | 0.49 | 46.4 |
| HD4020L24B | 24 | 14.0-27.6 | 0.06 | 6000 | 0.14 | 4.9 | 4.4 | 0.17 | 29.2 |
| HD4020M24B | 24 | 14.0-27.6 | 0.09 | 7500 | 0.19 | 6.7 | 6.4 | 0.25 | 33.5 |
| HD4020H24B | 24 | 14.0-27.6 | 0.13 | 9000 | 0.24 | 8.4 | 9.1 | 0.36 | 38.8 |
| HD4020U24B | 24 | 14.0-27.6 | 0.18 | 12000 | 0.29 | 10.2 | 12.4 | 0.49 | 46.4 |






























1 What are kinds of cooling fan or centrigugal fan supplied by your company?
Answer: we can provide DC cooling fan, AC cooling fan, EC cooling fan and blower fan.
2 What are kinds of information provided by the customer before inquiry?
Answer : please kindly advise the size, voltage, the type of bearing, the speed of fan , or air flow.
3 How many types bearing of our cooling fan are there in our compnay at present?
Answer : now we have two types bearing for the fan, sleeve and ball, working time of sleeve is for 30,000 hours, the ball is for 50,000 hours.
4 How to detect the data of cooing fan in your company?
Answer: the speed and voltage are detected by the tachometer, air flow is found by wind tunnel.
5 How to control the quanlity of products in your company.
Answer: 100% total testing before each of fan leaves our factory.
Ordering and Pricing
- Minimum order quantity: 500 piece
- Volume pricing:
- 500–999 piece: US $3.2 / piece
- 1000+ piece: US $2.5 / piece
- Ships from: China
- Customization: OEM and ODM accepted on qualifying volumes.
Frequently Asked Questions
What is the minimum order quantity for this refrigeration fan?
The standard minimum order quantity is 500 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 2 Years warranty. Spare parts and technical support remain available after the warranty period.
Which certifications does this refrigeration fan carry?
It is supplied with ce RoHS documentation, which covers the requirements of most import markets. Additional test reports can be issued on request.
Can the refrigeration fan be supplied for my local voltage?
The standard configuration is 12V. 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 Beijing Zihang Dahui Electronics Co., Ltd., based in China. The company 7 years as a verified Alibaba.com supplier, operates its own manufacturing, passed third-party supplier assessment. Browse the full Beijing Zihang Dahui Electronics Co., Ltd. range on HVACR Nexus.
See more in Axial Flow Fans on HVACR Nexus.
























