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LWDE-400 (16")S-MWN-04 product photo
  • ImpellerØ355 mm
  • Max airflow3,467 m³/h
  • Voltage110-120 V
  • Speed2,800 rpm
  • Input power659 W
  • Noise67 dB(A)

LWDE-355 (14″)U-MWN-03 EC Ultra Silent Metal Duct Fan Ø355 mm

Ø355 mm | EC | Max airflow 3,467 m³/h | 67 dB(A)

SKU: LWDE-355 (14")U-MWN-03 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-355 (14")U-MWN-03 Dimensional drawing

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

LWDE-355 (14")U-MWN-03 is a LONGWELL EC Ultra Silent Metal Duct Fan from the Ultra Silent Duct Fans range, impeller Ø355 mm, rated 110-120 V EC, maximum airflow 3,467 m³/h, noise 67 dB(A), input power 659 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-355 (14")U-MWN-03
Series LWDE355
Motor type EC
Phase 1-phase
Rated voltage 110-120 V
Frequency 60 Hz
Input power 659 W
Speed 2,800 rpm
Max. airflow 3,467 m³/h
Noise 67 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 LWDE355: 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 · EC)

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

ModelMax airflowMax static pressureSpeedPowerNoiseVoltage
LWDE-355 (14")U-MWN-03 this model 3,467 m³/hsee curve 2,800 rpm659 W67 dB(A)110-120 V
LWBE3G355-092PS-15 2,472 m³/h350 Pa 1,400 rpm120 W68 dB(A)230 V View
LWBE3G355-102PS-17 3,142 m³/h670 Pa 1,900 rpm330 W77 dB(A)230 V View
LWBE3G355-102PS-16 3,554 m³/h618 Pa 1,800 rpm285 W76 dB(A)230 V View
LWBE3G355-102PS-18 3,915 m³/h770 Pa 2,050 rpm423 W74 dB(A)230 V View
LWFE3G355-102PS-09 4,171.5 m³/h906.4 Pa 2,550 rpm520 W75 dB(A)230 V View
LWFE3G355-102PS-03 5,047 m³/h1,009.4 Pa 2,200 rpm700 W85 dB(A)230 V View
LWBE3G355-138PT-20 5,356 m³/h639 Pa 2,100 rpm990 W79 dB(A)400 V View
LWFE3G355-102PT-10 6,180 m³/h1,751 Pa 2,550 rpm1,100 W86 dB(A)400 V View
LWDE-355 (14")S-MWN-04 6,200 m³/hsee curve 2,800 rpm659 W67 dB(A)220-240 V View
LWBE3G355-138PT-12 6,249 m³/h1,353 Pa 2,710 rpm1,100 W77 dB(A)400 V View
LWBE3G355-188PT-26 6,756 m³/h2,524 Pa 3,800 rpm3,100 W96 dB(A)380 V View
LWBE3G355-188NT-29 6,756 m³/h2,523.5 Pa 3,800 rpm3,100 W96 dB(A)380 V View
LWBE3G355-138PT-05 7,045 m³/h830 Pa 2,700 rpm1,700 W81 dB(A)400 V View
LWBE3G355-188PT-11 8,034 m³/h1,545 Pa 3,200 rpm3,090 W96 dB(A)400 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 LWDE355 seriesSame impeller, different speed grade or wiring

LWDE-400 (16")S-MWN-04 product photoLWDE-355 (14")S-MWN-04Ø355 mm · 6,200 m³/h · ECsame series

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

LWDA-350 (14")S-MWN-02 product photoLWDA-350 (14")S-MWN-02Ø350 mm · 6,450 m³/h · ACadjacent sizeLWDA-350 (14")U-MWN-01 product photoLWDA-350 (14")U-MWN-01Ø350 mm · 2,130 m³/h · ACadjacent size混流风机LWDE-350 (14")U-MWN-01Ø350 mm · 3,467 m³/h · ECadjacent size混流风机LWDE-350 (14")S-MWN-02Ø350 mm · 6,200 m³/h · ECadjacent sizeLONGWELL product videoLWDA-315S-MBN-02Ø315 mm · 1,680 m³/h · 593 Pa · ACadjacent size金属管道风机LWDE-315S-MBN-01Ø315 mm · 1,839 m³/h · 793 Pa · ECadjacent size

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

LWAE3G350SS-5PEW-03 product photoLWAE3G350SS-5PEW-03Ø350 mm · 3,451 m³/h · 128 Pa · ECsimilar dutyLWAE3G350SS-5PGW-05 product photoLWAE3G350SS-5PGW-05Ø350 mm · 3,451 m³/h · 128 Pa · ECsimilar dutyLWAE3G350ST-5PNW-02 product photoLWAE3G350ST-5PNW-02Ø350 mm · 3,451 m³/h · 128 Pa · ECsimilar dutyLWAE3G350ST-5PGW-06 product photoLWAE3G350ST-5PGW-06Ø350 mm · 3,451 m³/h · 128 Pa · ECsimilar dutyLWAE3G350ST-5PEW-04 product photoLWAE3G350ST-5PEW-04Ø350 mm · 3,451 m³/h · 128 Pa · ECsimilar duty

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

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