LWDA series product photo (series image)

LWDA series dimensional drawing (shared by several models)

Representative image of the series — dimensions and configuration of this model are given in the drawing and data table below.

ImpellerØ100 mm3.9 in
Max airflow140 m³/h82 CFM
Max static pressure58 Pa0.23 in. wg
Voltage220 V
Speed2,800 rpm
Input power20 W
Noise48 dB(A)

LWDA-100(4″)S-MWN-08 Duct Booster Fan Ø100 mm

Ø100 mm | AC | Max airflow 140 m³/h | Max static pressure 58 Pa | 48 dB(A)

SKU: LWDA-100(4")S-MWN-08 Category: Inline Duct Fans

Direct from LONGWELL
OEM / ODM
Samples in 1–3 days
Production 15–30 days
12-month warranty
CE · RoHS · ETL on request

PDFRequest datasheetsent by an engineer within 1 business dayPDFFull product catalogueStraight Through duct fans · SKU on PDF p. 1

All files for LWDA-100(4")S-MWN-082 files · direct download

PDFFull product catalogue · model on PDF p. 1 WEBPCatalogue data table

CAD models (STEP / DWG) are released on request — see “Engineering files” below. Another format or a non-standard variant? Ask an engineer · download center

Used in

Building & agricultural ventilation Vertical farming All industries →

Proven in projects

Smart home ERV Range hoods, ovens & fan coils Drying, heat treatment & ovens All case studies →

Get a quote · LWDA-100(4")S-MWN-08

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WhatsApp / Phone+86 183 5827 4663 E-mail an engineersales@longwellfans.com Files for LWDA-100(4")S-MWN-08datasheet · catalogue · drawings · curves — listed above

Samples 1–3 days · fee credited to your order
Typically 50–200 pcs · ~30 pcs for a first validation order
T/T 30 / 70 · FOB / CIF / DDP
Released to LONGWELL standards · 12-month warranty
How ordering works →

Video LWDA-100(4")S-MWN-08

Powerful & Quiet: The Reliable Choice – Longwell Duct Fan | LWDA-100(4″)S-PWN-14 · open in video library

Longwell AC Plastic Duct Fan, Breathe Fresh Vitality into Your Space | LWDA-100(4)S-PWN-18 · open in video library

Catalogue table LWDA-100(4")S-MWN-08

LWDA-100(4")S-MWN-08 Catalogue data table — **Catalogue data table**Series table from the catalogue — read the row for this model. Dimensions are given on the drawing of the same size.

Files for LWDA-100(4")S-MWN-08: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.

Technical description LWDA-100(4")S-MWN-08

LWDA-100(4")S-MWN-08 is a LONGWELL Duct Booster Fan from the Inline Duct Fans range, impeller Ø100 mm, rated 220 V AC, maximum airflow 140 m³/h, maximum static pressure 58 Pa, noise 48 dB(A), input power 20 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.

Technical data

Model	LWDA-100(4")S-MWN-08
Series	LWDA100
Motor type	AC
Phase	1-phase
Rated voltage	220 V
Frequency	50 Hz
Input power	20 W
Speed	2,800 rpm
Max. airflow	140 m³/h
Max. static pressure	58 Pa
Noise	48 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.

Company certificates

Scans of original documents held by Ningbo Longwell Electric Technology Co., Ltd.: the company ISO 9001 / 14001 / 45001 management-system certificate. Click a scan to open the original.

ISO 9001 / 14001 / 45001Management systems of Ningbo Longwell Electric Technology Co., Ltd. (company certificate).

ISO 9001 / 14001 / 45001 management system certificate — LONGWELL certificate

PDFISO 9001 / 14001 / 45001 management system certificate

Need a Declaration of Conformity for this model and your destination market? Ask us — we arrange additional certification on request.

How to order LWDA-100(4")S-MWN-08

Most first orders follow the same eight steps. Quantities, terms and lead times are confirmed in your quotation.

1SelectFind models by duty point in the selector or by model number, compare on the curve and add them to your RFQ list.
2Engineering checkWithin 1 business day you receive the duty-point check on the curve, price and lead time.
3SamplesStock models ship in 1–3 days.
4Validation supportDatasheets, drawings, wiring diagrams and DoC per model; test reports, CAD and register maps after a short project check or NDA.
5Order & paymentProforma invoice; first orders on T/T 30 / 70.
6Production & release15–30 days at the partner factory that builds your model, then inspected and released to LONGWELL standards with outgoing sampling to AQL 2.5.
7ShippingFOB / CIF / DDP by sea from Ningbo or Shanghai; express and air on EXW / FCA / DAP.
8After-sales12 months standard, extendable to 18–24 months by project agreement; test records retained for 5 years; 8D closed-loop for any issue; annual technical review for framework customers.

See terms, QC and FAQ →

Test & release at LONGWELL

Specified and drawn by LONGWELL; built to LONGWELL drawings by qualified partner factories; inspected and released to LONGWELL standards before shipment.

See test and release photos (8)

LONGWELL Semi-anechoic chamber — Semi-anechoic chamber

LONGWELL Test laboratory — Test laboratory

Test labs and all certificate scans →

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.

Model	Max airflow	Max static pressure	Speed	Power	Noise	Voltage
LWDA-100(4")S-MWN-08 this model	140 m³/h	58 Pa	2,800 rpm	20 W	48 dB(A)	220 V
LWDA-100(4")U-PWN-17	205 m³/h	135 Pa	1,900 rpm	34 W	24 dB(A)	115 V	View
LWDA-100(4")S-PWN-15	205 m³/h	135 Pa	1,900 rpm	25 W	24 dB(A)	230 V	View
LWDA-100S-MBN-14	242 m³/h	326 Pa	2,450 rpm	60 W	59 dB(A)	230 V	View
LWDA-100S-PWN-15	319 m³/h	185 Pa	2,550 rpm	40 W	25 dB(A)	230 V	View
LWDA-100(4")U-PWN-16	325 m³/h	163 Pa	2,360 rpm	34 W	30 dB(A)	115 V	View
LWDA-100(4")S-PWN-14	325 m³/h	163 Pa	2,360 rpm	36 W	30 dB(A)	230 V	View
LWDA-100 (4")U-PWN-01	410 m³/h	see curve	3,350 rpm	41 W	52 dB(A)	110-120 V	View
LWDA-100 (4")U-MWN-03	410 m³/h	see curve	3,350 rpm	41 W	51 dB(A)	110-120 V	View
LWDA-100 (4")S-PWN-02	605 m³/h	168 Pa	2,900 rpm	41 W	51 dB(A)	220-240 V	View
LWDA-100 (4")S-MWN-04	605 m³/h	see curve	2,900 rpm	41 W	49 dB(A)	220-240 V	View