STjh 821 CFM centrifugal cleanroom exhaust fan unit with a compact square inline casing on white.

STJH-CENTRIFUGAL-CLEANROOM-EXHAUST-FAN-821CFM

Centrifugal Cleanroom Exhaust-Air Fan Unit 821 CFM

A compact square inline exhaust unit delivering 188-821 CFM with a direct-drive backward-inclined wheel.

188-821 CFM airflow range
Direct-drive centrifugal wheel
Horizontal or vertical mounting

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Product Introduction

This small centrifugal exhaust unit packages a backward-inclined composite impeller inside a short square casing. Its documented 188-821 CFM range suits local cleanroom extract and return branches, and the inline arrangement can be oriented horizontally or vertically to follow available duct space.

Key Features

Restricted-space casing

The compact square body can replace a long scroll-fan assembly in a crowded ceiling or service chase.

No belt transmission

Direct drive removes belt tensioning and the associated maintenance access requirement.

Flexible duct orientation

The same inline form supports horizontal or vertical airflow when installed within its mounting limits.

Technical Parameters

Airflow Range	188-821 CFM
Fan Arrangement	Square inline centrifugal
Drive	Direct
Impeller	Backward-inclined composite
Installation	Horizontal or vertical inline
Casing	Compact square steel enclosure
Connections	Rectangular duct flanges
Access	Removable service panel
Duty	Small exhaust or return branch
Customization	Motor, controls, coating and duct transitions can be configured for the intended application and operating environment.

Applications

Small cleanroom exhaust branches, gowning-room return air, laboratory support extract and equipment-cabinet ventilation.

Solutions for Your Application

There is insufficient ceiling length for a housed centrifugal fan and transitions.Install the short square inline unit directly between rectangular duct sections.

A belt drive would add particulate-producing wear components above a controlled zone.Use the direct-drive wheel and maintain access to the motor and impeller through the service panel.

Available Options

Speed controller, disconnect, motorized isolation damper, coated casing, flexible connectors and vibration isolation can be supplied.

Planning a Centrifugal Cleanroom Exhaust-Air Fan Unit 821 CFM specification?

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