STjh 125 mm 188 m3/h circular inline duct fan with a rounded metal casing and wider duct connections on white.

STJH-CIRCULAR-INLINE-DUCT-FAN-125MM-188M3H

Circular Inline Duct Fan 125 mm 188 m3/h

A quiet medium-diameter fan for small return-air and support ventilation branches.

125 mm duct size
188 m3/h maximum flow
30.8 dB(A) at 3 m

Introduction de produit

This 125 mm fan provides up to 188 m3/h with a 31.6 W motor. A documented sound-pressure value of 30.8 dB(A) at 3 m differentiates it for occupied support areas where the 100 mm fan may be undersized but a 160 mm high-flow unit would add unnecessary noise and duct size. Installed acoustics still depend on duct breakout, mounting and the selected operating point.

Key Features

Quiet support-air duty

The published acoustic value suits small occupied zones when the duct system is also treated.

Efficient medium impeller

A 31.6 W motor provides more airflow than the smaller 100 mm configuration.

Direct circular connection

The casing fits a 125 mm branch without separate square-to-round transitions.

Paramètres techniques

Duct Diameter	125 mm
Maximum Airflow	188 m3/h
Input Power	31.6 W
Sound Pressure	30.8 dB(A) at 3 m
Housing	Metal circular inline casing
Motor	Integrated impeller motor
Installation	Round supply, return or exhaust branch
Control	Compatible speed regulation by selection
Primary Duty	Quiet support ventilation
Customisation	Disponible en fonction de l'application prévue et de l'environnement d'exploitation.

Applications

For quiet cleanroom support ventilation, small return-air branches, clinics and controlled office areas.

Solutions for Your Application

Catalogue sound data is achieved in free field but duct breakout raises room noise.Assess the complete acoustic path and add isolation, lined duct or a silencer as required.

A controller incompatible with the motor causes hum or overheating.Use the approved speed-control method and verify minimum stable fan speed.

Options disponibles

Specify operating airflow and pressure, voltage, speed control, acoustic treatment, damper, mounting, connectors and access.

Planning a Circular Inline Duct Fan 125 mm 188 m3/h specification?

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