LWCD-4390LN-06 — construction, airflow path and running condition.
- ImpellerØ43 mm1.7 in
- Max airflow44 m³/h26 CFM
- Max static pressure12 Pa0.05 in. wg
- Voltage12 V
- Speed2,400 rpm
- Input power1.44 W
- Noise36 dB(A)
LWCD-4390LN-06 DC Cross Flow Fan Ø43 mm
Ø43 mm | DC | Max airflow 44 m³/h | Max static pressure 12 Pa | 36 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS

Need a non-standard size or another format? Ask an engineer or search the download center.
LWCD-4390LN-06 is a LONGWELL DC Cross Flow Fan from the DC Cross Flow Fans range, impeller Ø43 mm, rated 12 V DC, maximum airflow 44 m³/h, maximum static pressure 12 Pa, noise 36 dB(A), input power 1.44 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.
Technical data
| Model | LWCD-4390LN-06 |
|---|---|
| Series | LWCD4390 |
| Motor type | DC |
| Inlet | Single inlet |
| Rated voltage | 12 V |
| Current | 0.12 A |
| Input power | 1.44 W |
| Speed | 2,400 rpm |
| Max. airflow | 44 m³/h |
| Max. static pressure | 12 Pa |
| Noise | 36 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Impeller diameter | Ø43 mm |
| Outlet length | 98mm |
| Impeller material | Aluminum alloy |
| Insulation class | B |
| Bearing | Maintenance-free ball bearings |
| Duty | S1 |
Typical applications
- Indoor air-conditioning units
- Air curtains and door air barriers
- Elevator and cabinet ventilation
- Linear air supply in appliances
Series LWCD4390: models in the same series share the impeller and motor platform and differ in speed grade, voltage or lead-out / terminal-box configuration — compare them in the table below or ask for the best fit at your duty point.
Nameplate values: maximum airflow is measured at zero static pressure and maximum static pressure at zero airflow; the two never occur together. Confirm the operating point on the performance curve. Final selection is subject to the duty point (airflow / static pressure / voltage / control mode) and project verification.
Alternatives with the same impeller (Ø43 mm · DC)
Same impeller, different speed grade, power or wiring. Step up for more airflow, step down for lower noise.
| Model | Max airflow | Max static pressure | Speed | Power | Noise | Voltage | |
|---|---|---|---|---|---|---|---|
| LWCD-4390LN-06 this model | 44 m³/h | 12 Pa | 2,400 rpm | 1.44 W | 36 dB(A) | 12 V | |
| LWCD-4390MN-07 | 44 m³/h | 12 Pa | 2,400 rpm | 1.68 W | 36 dB(A) | 24 V | View |
| LWCD-43150LN-06 | 73 m³/h | 12 Pa | 2,400 rpm | 2.2 W | 37 dB(A) | 12 V | View |
| LWCD-43150MN-07 | 73 m³/h | 12 Pa | 2,400 rpm | 2.4 W | 37 dB(A) | 24 V | View |
| LWCD-43190MN-07 | 90 m³/h | 13 Pa | 2,400 rpm | 2.88 W | 39 dB(A) | 24 V | View |
| LWCD-43190LN-06 | 90 m³/h | 13 Pa | 2,400 rpm | 2.4 W | 39 dB(A) | 12 V | View |
| LWCD-43250LN-06 | 113 m³/h | 14 Pa | 2,400 rpm | 2.76 W | 40 dB(A) | 12 V | View |
| LWCD-43250MN-07 | 113 m³/h | 14 Pa | 2,400 rpm | 3.12 W | 40 dB(A) | 24 V | View |
| LWCD-43290MN-07 | 136 m³/h | 14 Pa | 2,400 rpm | 3.36 W | 41 dB(A) | 24 V | View |
| LWCD-43290LN-06 | 136 m³/h | 14 Pa | 2,400 rpm | 3.12 W | 41 dB(A) | 12 V | View |
| LWCD-43350MN-07 | 158 m³/h | 15 Pa | 2,400 rpm | 3.84 W | 41 dB(A) | 24 V | View |
| LWCD-43350LN-06 | 158 m³/h | 15 Pa | 2,400 rpm | 3.48 W | 41 dB(A) | 12 V | View |
| LWCD-43420MN-07 | 191 m³/h | 16 Pa | 2,400 rpm | 4.08 W | 43 dB(A) | 24 V | View |
| LWCD-43420LN-06 | 191 m³/h | 16 Pa | 2,400 rpm | 3.84 W | 43 dB(A) | 12 V | View |
Not sure which one? Send us the duty point (airflow / static pressure / noise limit) — use the selector or ask an engineer.
Other models in the LWCD4390 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWCA-45120SN-07Ø45 mm · 123 m³/h · 26 Pa · ACadjacent size
LWCD-45870MN-06Ø45 mm · 454 m³/h · 26 Pa · DCadjacent size
LWCA-45300SN-06Ø45 mm · 172 m³/h · 25 Pa · ACadjacent size
LWCA-45360SN-06Ø45 mm · 207 m³/h · 25 Pa · ACadjacent size
LWCD-45750MN-06Ø45 mm · 392 m³/h · 28 Pa · DCadjacent size
LWCA-45180SN-07Ø45 mm · 184 m³/h · 26 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
See all Cross Flow Fans · select by duty point


















