Need a non-standard size or another format? Ask an engineer or search the download center.
- ImpellerØ355 mm
- Max airflow2,130 m³/h
- Voltage110-120 V
- Speed1,720 rpm
- Input power260 W
- Noise63 dB(A)
LWDA-355 (14″)U-MWN-03 AC Ultra Silent Metal Duct Fan Ø355 mm
Ø355 mm | AC | Max airflow 2,130 m³/h | 63 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
LWDA-355 (14")U-MWN-03 is a LONGWELL AC Ultra Silent Metal Duct Fan from the Ultra Silent Duct Fans range, impeller Ø355 mm, rated 110-120 V AC, maximum airflow 2,130 m³/h, noise 63 dB(A), input power 260 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWDA-355 (14")U-MWN-03 |
|---|---|
| Series | LWDA355 |
| Motor type | AC |
| Phase | 1-phase |
| Rated voltage | 110-120 V |
| Frequency | 60 Hz |
| Input power | 260 W |
| Speed | 1,720 rpm |
| Max. airflow | 2,130 m³/h |
| Noise | 63 dB(A) |
| Impeller diameter | Ø355 mm |
| Inlet diameter | 355mm |
Typical applications
- Residential and commercial fresh-air systems
- Kitchen and bathroom exhaust
- Local pressurisation and booster duty
- Hotel and office ventilation
Series LWDA355: 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 (Ø355 mm · AC)
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 | |
|---|---|---|---|---|---|---|---|
| LWDA-355 (14")U-MWN-03 this model | 2,130 m³/h | see curve | 1,720 rpm | 260 W | 63 dB(A) | 110-120 V | |
| LWBA4E355-102NS-16 | 2,636 m³/h | 410 Pa | 1,425 rpm | 203 W | 69.9 dB(A) | 230 V | View |
| LWBA4E355-102NS-15 | 3,035 m³/h | 546 Pa | 1,635 rpm | 268 W | 73.8 dB(A) | 230 V | View |
| LWBA4D355-102NT-10 | 3,245 m³/h | 515 Pa | 1,600 rpm | 270 W | 67 dB(A) | 380 V | View |
| LWEA355S(T)M-159E | 3,265 m³/h | 93 Pa | 1,450 rpm | 370 W | — | 220 V | View |
| LWBA4E355-138NS-13 | 3,399 m³/h | 464 Pa | 1,400 rpm | 400 W | 72 dB(A) | 230 V | View |
| LWBA4D355-138NT-11 | 3,399 m³/h | 464 Pa | 1,450 rpm | 360 W | 72 dB(A) | 380 V | View |
| LWBA4E355-138NS-14 | 4,017 m³/h | 618 Pa | 1,700 rpm | 600 W | 77 dB(A) | 230 V | View |
| LWBA4D355-138NT-12 | 4,017 m³/h | 618 Pa | 1,700 rpm | 550 W | 77 dB(A) | 380 V | View |
| LWFA6D355-188NT-02 | 4,172 m³/h | 412 Pa | 900 rpm | 1,150 W | 70 dB(A) | 380 V | View |
| LWBA2D355-188NT-17 | 4,635 m³/h | 1,339 Pa | 2,700 rpm | 1,600 W | 90 dB(A) | 380 V | View |
| LWFA4D355-188NT-01 | 5,665 m³/h | 906.4 Pa | 1,340 rpm | 3,500 W | 80 dB(A) | 380 V | View |
| LWBA2D355-188NT-18 | 5,974 m³/h | 1,339 Pa | 2,700 rpm | 2,500 W | 90 dB(A) | 380 V | View |
| LWDA-355 (14")S-MWN-04 | 6,450 m³/h | see curve | 2,900 rpm | 903 W | 68 dB(A) | 220-240 V | View |
| LWEA355S(T)M-160E | 6,542 m³/h | 373 Pa | 2,900 rpm | 750 W | — | 220 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 LWDA355 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWDA-350 (14")S-MWN-02Ø350 mm · 6,450 m³/h · ACadjacent size
LWDA-350 (14")U-MWN-01Ø350 mm · 2,130 m³/h · ACadjacent size
LWDE-350 (14")U-MWN-01Ø350 mm · 3,467 m³/h · ECadjacent sizeLWDE-350 (14")S-MWN-02Ø350 mm · 6,200 m³/h · ECadjacent size
LWDA-315S-MBN-02Ø315 mm · 1,680 m³/h · 593 Pa · ACadjacent size
LWDE-315S-MBN-01Ø315 mm · 1,839 m³/h · 793 Pa · ECadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWCE-150500SN-06Ø150 mm · 2,150 m³/h · 82 Pa · ECsimilar duty
LWCE-120900SN-06Ø120 mm · 2,100 m³/h · 161 Pa · ECsimilar duty
LWDA-250(10")S-MWN-06Ø250 mm · 2,100 m³/h · 215 Pa · ACsimilar duty
LWA-250(10")U(S)M-03Ø250 mm · 2,100 m³/h · 215 Pa · ACsimilar duty
LWFA-E-250-02Ø250 mm · 2,100 m³/h · 215 Pa · ACsimilar dutySee all Impeller Ø200–400 mm · select by duty point