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LWDA-300 (12")S-MWN-04 product photo
  • ImpellerØ300 mm
  • Max airflow3,150 m³/h
  • Voltage220-240 V
  • Speed2,900 rpm
  • Input power320 W
  • Noise65 dB(A)

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

Ø300 mm | AC | Max airflow 3,150 m³/h | 65 dB(A)

SKU: LWDA-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.
LWDA-300 (12")S-MWN-04 Dimensional drawing

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

LWDA-300 (12")S-MWN-04 is a LONGWELL AC Ultra Silent Metal Duct Fan from the Ultra Silent Duct Fans range, impeller Ø300 mm, rated 220-240 V AC, maximum airflow 3,150 m³/h, noise 65 dB(A), input power 320 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.

Technical data

Model LWDA-300 (12")S-MWN-04
Series LWDA300
Motor type AC
Phase 1-phase
Rated voltage 220-240 V
Frequency 50 Hz
Input power 320 W
Speed 2,900 rpm
Max. airflow 3,150 m³/h
Noise 65 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 LWDA300: 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 · AC)

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

ModelMax airflowMax static pressureSpeedPowerNoiseVoltage
LWDA-300 (12")S-MWN-04 this model 3,150 m³/hsee curve 2,900 rpm320 W65 dB(A)220-240 V
LWA-300(12")U(S)M-01 35 m³/hsee curve 1,350 rpm100 W—110-120 V View
LWA-300(12")U(S)M-02 46 m³/hsee curve 1,350 rpm120 W—110-120 V View
LWA-300(12")U(S)M-03 65 m³/hsee curve 2,800 rpm370 W—110-120 V View
LWFA6E300-138DS-01 1,596 m³/h368 Pa 480 rpm386 W—230 V View
LWDA-300 (12")U-MWN-01 1,900 m³/hsee curve 3,450 rpm489 W78 dB(A)110-120 V View
LWDA-300 (12")U-MWN-03 1,900 m³/hsee curve 3,450 rpm489 W71 dB(A)110-120 V View
LWEA300S(T)M-067E 2,280 m³/hsee curve 1,450 rpm180 W—220 V View
LWEAF300-01 2,280 m³/hsee curve 1,450 rpm180 W—220 V View
LWFA-E-300-02 2,900 m³/h408 Pa ——65 dB(A)— View
LWA-300(12")U(S)M-04 3,000 m³/h230 Pa 2,800 rpm370 W—110-120 V View
LWDA-300(12")S-MWN-05 3,000 m³/h230 Pa 2,800 rpm120 W68 dB(A)220 V View
LWFA-E-300-03 3,100 m³/h422 Pa ——66 dB(A)— View
LWDA-300 (12")S-MWN-02 3,150 m³/hsee curve 2,900 rpm320 W72 dB(A)220-240 V View
LWFA-E-300-01 4,300 m³/h720 Pa ——72 dB(A)— 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 LWDA300 seriesSame impeller, different speed grade or wiring

LWDA-300 (12")U-MWN-03 product photoLWDA-300 (12")U-MWN-03Ø300 mm · 1,900 m³/h · ACsame seriesLWDA-300 (12")U-MWN-01 product photoLWDA-300 (12")U-MWN-01Ø300 mm · 1,900 m³/h · ACsame seriesLWDA-300 (12")S-MWN-02 product photoLWDA-300 (12")S-MWN-02Ø300 mm · 3,150 m³/h · ACsame seriesLONGWELL product videoLWDA-300(12")S-MWN-05Ø300 mm · 3,000 m³/h · 230 Pa · ACsame 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

LWBE3G355-102PS-17 product photoLWBE3G355-102PS-17Ø355 mm · 3,142 m³/h · 670 Pa · ECsimilar dutyLWBE3G355-102NS-21 product photoLWBE3G355-102NS-21Ø355 mm · 3,141.5 m³/h · 669.5 Pa · ECsimilar dutyLWBE3G280-102NS-16 product photoLWBE3G280-102NS-16Ø280 mm · 3,193 m³/h · 1,442 Pa · ECsimilar dutyLWFE3G280-102PS-07 product photoLWFE3G280-102PS-07Ø280 mm · 3,193 m³/h · 1,442 Pa · ECsimilar dutyLWCE-1501000SN-06 product photoLWCE-1501000SN-06Ø150 mm · 3,100 m³/h · 119 Pa · ECsimilar duty

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

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