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- ImpellerØ400 mm15.7 in
- Max airflow4,032 m³/h2,373 CFM
- Voltage110-120 V
- Speed2,800 rpm
- Input power1,200 W1.61 hp
- Noise70 dB(A)
LWDE-400 (16″)U-MWN-03 EC Ultra Silent Metal Duct Fan Ø400 mm
Ø400 mm | EC | Max airflow 4,032 m³/h | 70 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · RoHS · ETL on request
LWDE-400 (16")U-MWN-03 is a LONGWELL EC Ultra Silent Metal Duct Fan from the Ultra Silent Duct Fans range, impeller Ø400 mm, rated 110-120 V EC, maximum airflow 4,032 m³/h, noise 70 dB(A), input power 1,200 W. The EC motor integrates the drive electronics: stepless speed control by 0–10 V or PWM signal, speed feedback and high efficiency at part load.
Technical data
| Model | LWDE-400 (16")U-MWN-03 |
|---|---|
| Series | LWDE400 |
| Motor type | EC |
| Phase | 1-phase |
| Rated voltage | 110-120 V |
| Frequency | 60 Hz |
| Input power | 1,200 W |
| Speed | 2,800 rpm |
| Max. airflow | 4,032 m³/h |
| Noise | 70 dB(A) |
| Impeller diameter | Ø400 mm |
| Inlet diameter | 400mm |
Typical applications
- Residential and commercial fresh-air systems
- Kitchen and bathroom exhaust
- Local pressurisation and booster duty
- Hotel and office ventilation
Series LWDE400: 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 (Ø400 mm · EC)
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 | |
|---|---|---|---|---|---|---|---|
| LWDE-400 (16")U-MWN-03 this model | 4,032 m³/h | see curve | 2,800 rpm | 1,200 W | 70 dB(A) | 110-120 V | |
| LWDE-400 (16")U-MWN-01 | 4,032 m³/h | see curve | 2,800 rpm | 1,200 W | 81 dB(A) | 110-120 V | View |
| LWDE-400 (16")S-MWN-02 | 6,850 m³/h | see curve | 2,800 rpm | 1,200 W | 81 dB(A) | 220-240 V | View |
| LWDE-400 (16")S-MWN-04 | 6,850 m³/h | see curve | 2,800 rpm | 1,200 W | 70 dB(A) | 220-240 V | View |
Not sure which one? Send us the duty point (airflow / static pressure / noise limit) — use the selector or ask an engineer.
Related products
Other models in the LWDE400 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWDE-355 (14")U-MWN-03Ø355 mm · 3,467 m³/h · ECadjacent size
LWDA-355 (14")S-MWN-04Ø355 mm · 6,450 m³/h · ACadjacent sizeLWDE-355 (14")S-MWN-04Ø355 mm · 6,200 m³/h · ECadjacent size
LWDA-355 (14")U-MWN-03Ø355 mm · 2,130 m³/h · ACadjacent size
LWDE-350 (14")S-MWN-02Ø350 mm · 6,200 m³/h · ECadjacent sizeLWDE-350 (14")U-MWN-01Ø350 mm · 3,467 m³/h · ECadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWBA4D355-138NT-12Ø355 mm · 4,017 m³/h · 618 Pa · ACsimilar duty
LWBA4E355-138NS-14Ø355 mm · 4,017 m³/h · 618 Pa · ACsimilar duty
LWBA6E450-138NS-05Ø450 mm · 4,017 m³/h · 309 Pa · ACsimilar duty
LWBA6D450-138NT-07Ø450 mm · 4,017 m³/h · 309 Pa · ACsimilar duty
LWFE3G250-138DS-02Ø250 mm · 4,058 m³/h · 479 Pa · ECsimilar dutySee all Impeller Ø200–400 mm · select by duty point