Find by model
No model number? Select by duty point →
LWDA-100 (4")U-MWN-03 product photo
  • ImpellerØ100 mm
  • Max airflow410 m³/h
  • Voltage110-120 V
  • Speed3,350 rpm
  • Input power41 W
  • Noise51 dB(A)

LWDA-100 (4″)U-MWN-03 AC Ultra Silent Metal Duct Fan Ø100 mm

Ø100 mm | AC | Max airflow 410 m³/h | 51 dB(A)

SKU: LWDA-100 (4")U-MWN-03 Categories: , ,
  • Factory direct
  • OEM / ODM
  • Samples in 1–3 days
  • Production 15–30 days
  • 18-month warranty
  • CE · ETL · RoHS
View RFQ →
Dimensional drawingDimensions in mm. Confirm against the final approval drawing before machining cut-outs.
LWDA-100 (4")U-MWN-03 Dimensional drawing

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

LWDA-100 (4")U-MWN-03 is a LONGWELL AC Ultra Silent Metal Duct Fan from the Ultra Silent Duct Fans range, impeller Ø100 mm, rated 110-120 V AC, maximum airflow 410 m³/h, noise 51 dB(A), input power 41 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.

Technical data

Model LWDA-100 (4")U-MWN-03
Series LWDA100
Motor type AC
Phase 1-phase
Rated voltage 110-120 V
Frequency 60 Hz
Input power 41 W
Speed 3,350 rpm
Max. airflow 410 m³/h
Noise 51 dB(A)
Impeller diameter Ø100 mm
Inlet diameter 100mm

Typical applications

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

Series LWDA100: 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 (Ø100 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-100 (4")U-MWN-03 this model 410 m³/hsee curve 3,350 rpm41 W51 dB(A)110-120 V
LWDA-100(4")S-MWN-08 140 m³/h58 Pa 2,800 rpm20 W48 dB(A)220 V View
LWDA-100(4")U-PWN-17 205 m³/h135 Pa 1,900 rpm34 W24 dB(A)115 V View
LWDA-100(4")S-PWN-15 205 m³/h135 Pa 1,900 rpm25 W24 dB(A)230 V View
LWDA-100S-MBN-14 242 m³/h326 Pa 2,450 rpm60 W59 dB(A)230 V View
LWDA-100S-PWN-15 319 m³/h185 Pa 2,550 rpm40 W25 dB(A)230 V View
LWDA-100(4")U-PWN-16 325 m³/h163 Pa 2,360 rpm34 W30 dB(A)115 V View
LWDA-100(4")S-PWN-14 325 m³/h163 Pa 2,360 rpm36 W30 dB(A)230 V View
LWDA-100 (4")U-PWN-01 410 m³/hsee curve 3,350 rpm41 W52 dB(A)110-120 V View
LWDA-100 (4")S-PWN-02 605 m³/h168 Pa 2,900 rpm41 W51 dB(A)220-240 V View
LWDA-100 (4")S-MWN-04 605 m³/hsee curve 2,900 rpm41 W49 dB(A)220-240 V View
LWCA-100520SN-06 950 m³/h128 Pa 1,400 rpm75 W58 dB(A)230 V View
LWCA-100620SN-06 1,100 m³/h151 Pa 1,400 rpm90 W59 dB(A)230 V View
LWCA-100720SN-06 1,300 m³/h175 Pa 1,400 rpm100 W60 dB(A)230 V View
LWCA-100820SN-06 1,500 m³/h203 Pa 1,400 rpm110 W61 dB(A)230 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 LWDA100 seriesSame impeller, different speed grade or wiring

LONGWELL product videoLWDA-100S-MBN-14Ø100 mm · 242 m³/h · 326 Pa · ACsame seriesLWDA-100 (4")S-MWN-04 product photoLWDA-100 (4")S-MWN-04Ø100 mm · 605 m³/h · ACsame seriesLWDA-100 (4")U-PWN-01 product photoLWDA-100 (4")U-PWN-01Ø100 mm · 410 m³/h · ACsame seriesLWDA-100 (4")S-PWN-02 product photoLWDA-100 (4")S-PWN-02Ø100 mm · 605 m³/h · 168 Pa · ACsame seriesLWDA-100(4")S-PWN-14 product photoLWDA-100(4")S-PWN-14Ø100 mm · 325 m³/h · 163 Pa · ACsame seriesLWDA-100(4")S-PWN-15 product photoLWDA-100(4")S-PWN-15Ø100 mm · 205 m³/h · 135 Pa · ACsame series

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

LONGWELL product videoLWDE3G100-IS-01Ø98 mm · 385 m³/h · 269 Pa · ECadjacent sizeLONGWELL product videoLWDE3G100-IS-03Ø98 mm · 385 m³/h · 269 Pa · ECadjacent sizeLWDD-125M-MBN-08 product photoLWDD-125M-MBN-08Ø125 mm · 270 m³/h · 365 Pa · DCadjacent sizeLWDA-125S-PWN-11 product photoLWDA-125S-PWN-11Ø125 mm · 319 m³/h · 185 Pa · ACadjacent sizeLWDA-125 (5")S-PWN-02 product photoLWDA-125 (5")S-PWN-02Ø125 mm · 605 m³/h · 168 Pa · ACadjacent sizeLWDA-125 (5")U-PWN-01 product photoLWDA-125 (5")U-PWN-01Ø125 mm · 410 m³/h · ACadjacent size

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

LWDA-125 (5")U-MWN-03 product photoLWDA-125 (5")U-MWN-03Ø125 mm · 410 m³/h · ACsimilar dutyLWDE-400 (16")S-MWN-04 product photoLWDE-100 (4")U-MWN-03Ø100 mm · 410 m³/h · ECsimilar dutyLWDE-400 (16")S-MWN-04 product photoLWDE-125 (5")U-MWN-03Ø125 mm · 410 m³/h · ECsimilar dutyLWDE-125 (5")S-PWN-02 product photoLWDE-100 (4")U-PWN-01Ø100 mm · 410 m³/h · ECsimilar duty

See all Impeller Ø100–150 mm  ·  select by duty point

Scroll to Top
RFQ list