STjh 4 foot recirculating negative-pressure weighing system with built-in blower and single HEPA return

STJH-NEGATIVE-PRESSURE-WEIGHING-4FT-SINGLE-HEPA

Weighing Booth 4 ft Recirculating Single-HEPA

A self-contained four-foot weighing station that filters captured powder and returns air to the room without fixed ductwork.

Four-foot work opening
Built-in blower
Ductless room recirculation

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Product Introduction

The four-foot single-HEPA booth combines the fan and filter inside the enclosure, avoiding an external exhaust connection. Its wider work zone can accommodate a balance, utensils and staged containers while negative inflow limits powder escape. The configuration is intended for materials whose risk assessment permits HEPA-filtered air to recirculate into the room.

Key Features

Self-contained installation

An integral blower and HEPA filter eliminate the need to route a duct to a remote fan.

Practical staging width

The four-foot opening provides room for the balance and separate incoming and completed containers.

Contained air return

Filtered exhaust returns to the laboratory after passing through the single HEPA stage.

Technical Parameters

Nominal Width	4 ft
Containment Mode	Negative-pressure inflow
Blower	Built-in
Filter Arrangement	Single HEPA
Exhaust	Room recirculation
Work-Zone Use	Balance plus container staging
Airflow Display	Integrated monitor option
Interior Finish	Cleanable powder-contact surfaces
Installation	Ductless floor or bench arrangement
Customization	Available based on the intended application and operating environment.

Applications

For general potent-powder weighing, sampling and dispensing where a fixed duct connection is unavailable and room recirculation is acceptable after a task-specific risk review.

Solutions for Your Application

The laboratory has no practical route for new exhaust ductwork.Use the integral blower and HEPA stage to form a self-contained recirculating station.

Small enclosures do not leave space to segregate open and closed containers.The four-foot working width supports distinct balance and staging areas.

Available Options

Choose work-surface material, sash or opening treatment, service outlets, airflow alarm and mobility arrangement. Confirm material suitability for single-stage recirculation.

Planning a Weighing Booth 4 ft Recirculating Single-HEPA specification?

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

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