RDH4020B Axial Fan | RDH Version and Recessed Mounting
- Product SKU: CFS-U002879
- Category: 40x40x20mm Cooling Fans, DC Brushless Fans
Confirm Fit Before Ordering
Use this quick check first, then review the full Product Specifications tab before placing an order.
Share the original fan label, connector photo, or target quantity so the team can check compatibility or quote bulk supply.
Reference model: RDH4020B
Product Specifications
Review the technical data used for replacement matching, procurement comparison and engineering approval.
RDH4020B identification and selection
The merchant model is X-FAN RDH4020B. The photo shows an axial fan with red/black leads and recessed mounting corners. Manufacturer tables hosted by the Japanese distributor distinguish RDH from the faster RDD option.
| Merchant model | RDH4020B; supplied version unconfirmed |
|---|---|
| Merchant input / size reference | 12V DC, 0.12A; 40x40x20mm |
| Visible harness | Red/black leads; termination outside view |
| Ordering distinction | Preserve RDH rather than RDD, RDM or RDL |
Can an RDD4020B speed row be used for RDH4020B?
No. Similar codes and extracted PDF rows can be confused. Match the complete manufacturer label, revision and frame drawing before assigning speed, airflow or bearing. Confirm the actual cable end separately.
Product listing photograph; X-FAN Japanese distributor model table.
Send the complete label, connector and mounting photos for matching help. For multiple units, request a quantity quote.
Compatibility Verification Checklist
Before ordering, please confirm these critical points:
- 1Exact model number on the original fan label
- 2Frame size: length, width and thickness
- 3Rated voltage and current
- 4Connector type and wire sequence
- 5Wire count: 2-wire, 3-wire or 4-wire PWM
- 6Airflow direction and mounting hole position
- 7Cable length and application environment
Still unsure? Send us photos of your fan label, connector and equipment. We will help check compatibility before you order.
Datasheet / Drawing
Use official documents and dimensional references when available. If a document is missing, contact us before ordering for replacement matching support.
Bulk Order
For repair batches, OEM projects or distributor replenishment, send the model number, target quantity, connector requirements and delivery destination.
Shipping & Returns
Shipping options, lead time and return eligibility may vary by product, quantity and destination. Confirm compatibility before ordering replacement fans.
- For bulk orders, request freight planning and availability confirmation before payment.
- For replacement orders, compare model, size, voltage, current and connector before installation.
- Unused items should remain in original condition for return review according to store policy.
FAQ
Common checks for replacement cooling fan sourcing.
Can you help match an old fan?
Yes. Send photos of the fan label, connector and equipment so we can check model, voltage, frame size and wiring.
Can I use a different brand as a replacement?
Often yes, but only after confirming frame size, electrical rating, airflow requirement, bearing type, connector and wire sequence.
What information is needed for a bulk quote?
Send part number, quantity, target lead time, connector or cable requirements and shipping destination.
