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LWDE-400 (16")S-MWN-04 product photo
  • ImpellerØ300 mm
  • Max airflow3,500 m³/h
  • Voltage220-240 V
  • Speed3,200 rpm
  • Input power352 W
  • Noise70 dB(A)

LWDE-300 (12″)S-MWN-04 EC Ultra Silent Metal Duct Fan Ø300 mm

Ø300 mm | EC | Max airflow 3,500 m³/h | 70 dB(A)

SKU: LWDE-300 (12")S-MWN-04 Categories: , ,
  • Factory direct
  • OEM / ODM
  • Samples in 1–3 days
  • Production 15–30 days
  • 18-month warranty
  • CE · ETL · RoHS
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Dimensional drawingDimensions in mm. Confirm against the final approval drawing before machining cut-outs.
LWDE-300 (12")S-MWN-04 Dimensional drawing

Need a non-standard size or another format? Ask an engineer or search the download center.

LWDE-300 (12")S-MWN-04 is a LONGWELL EC Ultra Silent Metal Duct Fan from the Ultra Silent Duct Fans range, impeller Ø300 mm, rated 220-240 V EC, maximum airflow 3,500 m³/h, noise 70 dB(A), input power 352 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-300 (12")S-MWN-04
Series LWDE300
Motor type EC
Phase 1-phase
Rated voltage 220-240 V
Frequency 50 Hz
Input power 352 W
Speed 3,200 rpm
Max. airflow 3,500 m³/h
Noise 70 dB(A)
Impeller diameter Ø300 mm
Inlet diameter 300mm

Typical applications

  • Residential and commercial fresh-air systems
  • Kitchen and bathroom exhaust
  • Local pressurisation and booster duty
  • Hotel and office ventilation

Series LWDE300: 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 (Ø300 mm · EC)

Same impeller, different speed grade, power or wiring. Step up for more airflow, step down for lower noise.

ModelMax airflowMax static pressureSpeedPowerNoiseVoltage
LWDE-300 (12")S-MWN-04 this model 3,500 m³/hsee curve 3,200 rpm352 W70 dB(A)220-240 V
LWAE3G300ST-5MEW-08 1,751 m³/h228 Pa 1,600 rpm90 W59 dB(A)220/230 V View
LWDE-300 (12")U-MWN-01 1,763 m³/hsee curve 3,200 rpm352 W74 dB(A)110-120 V View
LWDE-300 (12")U-MWN-03 1,763 m³/hsee curve 3,200 rpm352 W70 dB(A)110-120 V View
LWAE3G300ST-5PNW-11 1,906 m³/h118 Pa 1,600 rpm100 W54 dB(A)220/230 V View
LWAE3G300ST-5PGW-15 1,906 m³/h118 Pa 1,600 rpm100 W54 dB(A)220/230 V View
LWAE3G300ST-5PEW-13 1,906 m³/h118 Pa 1,600 rpm100 W54 dB(A)220/230 V View
LWAE3G300SS-5PNW-10 1,906 m³/h118 Pa 1,600 rpm100 W54 dB(A)220/230 V View
LWAE3G300SS-5PGW-14 1,906 m³/h118 Pa 1,600 rpm100 W54 dB(A)220/230 V View
LWAE3G300ST-5PNW-02 2,575 m³/h168 Pa 2,100 rpm165 W64 dB(A)220/230 V View
LWAE3G300ST-5PGW-06 2,575 m³/h168 Pa 2,100 rpm165 W64 dB(A)220/230 V View
LWAE3G300ST-5PEW-04 2,575 m³/h168 Pa 2,100 rpm165 W64 dB(A)220/230 V View
LWAE3G300SS-5PNW-01 2,575 m³/h168 Pa 2,100 rpm165 W64 dB(A)220/230 V View
LWAE3G300SS-5PGW-05 2,575 m³/h168 Pa 2,100 rpm165 W64 dB(A)220/230 V View
LWDE-300 (12")S-MWN-02 3,500 m³/hsee curve 3,200 rpm352 W74 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 LWDE300 seriesSame impeller, different speed grade or wiring

LWDE-400 (16")S-MWN-04 product photoLWDE-300 (12")U-MWN-03Ø300 mm · 1,763 m³/h · ECsame seriesLWDE-300 (12")S-MWN-02 product photoLWDE-300 (12")U-MWN-01Ø300 mm · 1,763 m³/h · ECsame seriesLWDE-300 (12")S-MWN-02 product photoLWDE-300 (12")S-MWN-02Ø300 mm · 3,500 m³/h · ECsame series

Adjacent sizesOne size up when airflow is short, one size down when it is too much

金属管道风机LWDE-315S-MBN-01Ø315 mm · 1,839 m³/h · 793 Pa · ECadjacent sizeLWDA-315(12.6'')S-PWN-05 product photoLWDA-315(12.6'')S-PWN-05Ø315 mm · 2,500 m³/h · 450 Pa · ACadjacent sizeLONGWELL product videoLWDA-315S-MBN-02Ø315 mm · 1,680 m³/h · 593 Pa · ACadjacent size混流风机LWDE-350 (14")U-MWN-01Ø350 mm · 3,467 m³/h · ECadjacent sizeLWDE-400 (16")S-MWN-04 product photoLWDE-250 (10")S-MWN-04Ø250 mm · 2,075 m³/h · ECadjacent sizeLWDE-300 (12")S-MWN-02 product photoLWDE-250 (10")S-MWN-02Ø250 mm · 2,075 m³/h · ECadjacent size

Alternatives at a similar dutySimilar airflow, different construction or motor platform

LWAA2E300S-5MBW-08 product photoLWAA2E300S-5MBW-08Ø300 mm · 3,502 m³/h · ACsimilar dutyLWAA6D450S-5MEB-08 product photoLWAA6D450S-5MEB-08Ø450 mm · 3,502 m³/h · ACsimilar dutyLWAA2E300S-5MEW-08 product photoLWAA2E300S-5MEW-08Ø300 mm · 3,502 m³/h · ACsimilar dutyLWFE3G225-138DS-03 product photoLWFE3G225-138DS-03Ø225 mm · 3,502 m³/h · 371 Pa · ECsimilar dutyLWFA4D280-188NT-01 product photoLWFA4D280-188NT-01Ø280 mm · 3,502 m³/h · 463.5 Pa · ACsimilar duty

See all Impeller Ø200–400 mm  ·  select by duty point

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