STjh 3322 CFM centrifugal cleanroom exhaust fan unit with a large deep casing and broad inlet flange on white.

STJH-CENTRIFUGAL-CLEANROOM-EXHAUST-FAN-3322CFM

Centrifugal Cleanroom Exhaust-Air Fan Unit 3322 CFM

A large direct-drive square inline fan for 1808-3322 CFM exhaust and return duty, with family pressure capability up to 1.75 in. wg.

1808-3322 CFM airflow
Direct-drive large impeller
Up to 1.75 in. wg family static

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Product Introduction

The 3322 CFM version uses a larger casing, impeller and motor assembly than the two lower-flow exhaust models. It targets high-volume return and general exhaust branches where an inline footprint is preferred, with published family capability extending to 1.75 inches water gauge depending on the selected operating point.

Key Features

High-volume branch duty

The airflow range covers major return or exhaust branches rather than one local room outlet.

Compact high-capacity form

A square inline enclosure reduces the transition length normally associated with a conventional centrifugal scroll.

Belt-free power train

The motor couples directly to the wheel, eliminating belt guards, pulleys and tension checks.

Technical Parameters

Airflow Range	1808-3322 CFM
Maximum Family Static	Up to 1.75 in. wg
Fan Type	Inline centrifugal
Drive	Direct
Impeller Scale	Large high-volume wheel
Casing	Square duct-mounted enclosure
Orientation	Horizontal or vertical by arrangement
Connections	Rectangular flanged inlet and outlet
Duty	High-volume exhaust or return air
Customization	Motor selection, controls, casing finish and duct interfaces can be tailored to the intended application and operating environment.

Applications

Large cleanroom exhaust headers, central return-air branches, production support ventilation and high-volume makeup-air transfer.

Solutions for Your Application

Several small fans create uneven flow and too many service points on one main branch.Use one correctly selected 3322 CFM unit and balance downstream branches at their dampers.

Available static pressure is uncertain once filters and silencers are added.Plot the complete system resistance and select the fan point within the family curve rather than relying on free-air volume.

Available Options

Variable speed control, motorized damper, coated steel construction, acoustic treatment, vibration mounts and access switches are available.

Planning a Centrifugal Cleanroom Exhaust-Air Fan Unit 3322 CFM specification?

Send us your dimensions, installation conditions, performance targets and required surface finish.

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