ImpellerØ100 mm3.9 in
Max airflow697 m³/h410 CFM
Voltage220-240 V
Speed3,350 rpm
Input power35 W
Noise51 dB(A)

LWDE-100 (4″)S-MWN-04 EC Ultra Silent Metal Duct Fan Ø100 mm

Ø100 mm | EC | Max airflow 697 m³/h | 51 dB(A)

Factory direct
OEM / ODM
Samples in 1–3 days
Production 15–30 days
18-month warranty
CE · ETL · RoHS

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WhatsApp / Phone+86 183 5827 4663 E-mail an engineersales@longwellfans.com All files for LWDE-100 (4")S-MWN-04drawings · curves · datasheet

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From ~30 pcs for a first validation order
T/T 30 / 70 · FOB / CIF / DDP
100% tested · 18-month warranty
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Drawings & downloads
Technical description

LWDE-100 (4")S-MWN-04 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

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

LWDE-100 (4")S-MWN-04 is a LONGWELL EC Ultra Silent Metal Duct Fan from the Ultra Silent Duct Fans range, impeller Ø100 mm, rated 220-240 V EC, maximum airflow 697 m³/h, noise 51 dB(A), input power 35 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-100 (4")S-MWN-04
Series	LWDE100
Motor type	EC
Phase	1-phase
Rated voltage	220-240 V
Frequency	50 Hz
Input power	35 W
Speed	3,350 rpm
Max. airflow	697 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 LWDE100: 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 · EC)

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
LWDE-100 (4")S-MWN-04 this model	697 m³/h	see curve	3,350 rpm	35 W	51 dB(A)	220-240 V
LWDE-100S-MBN-10	324 m³/h	927 Pa	3,300 rpm	85 W	72 dB(A)	230 V	View
LWDE-100 (4")U-PWN-01	410 m³/h	see curve	3,350 rpm	35 W	52 dB(A)	110-120 V	View
LWDE-100 (4")U-MWN-03	410 m³/h	see curve	3,350 rpm	35 W	51 dB(A)	110-120 V	View
LWDE-100 (4")S-PWN-02	697 m³/h	see curve	3,350 rpm	35 W	52 dB(A)	220-240 V	View
LWCE-100380SN-06	800 m³/h	106 Pa	1,500 rpm	32 W	55 dB(A)	230 V	View
LWCE-100520SN-06	1,100 m³/h	145 Pa	1,500 rpm	55 W	58 dB(A)	230 V	View
LWCE-100620SN-06	1,300 m³/h	173 Pa	1,500 rpm	70 W	59 dB(A)	230 V	View
LWCE-100720SN-06	1,530 m³/h	201 Pa	1,500 rpm	75 W	60 dB(A)	230 V	View
LWCE-100820SN-06	1,735 m³/h	229 Pa	1,500 rpm	80 W	61 dB(A)	230 V	View