The HEPA Box—also known as a HEPA terminal box, HEPA outlet box, or cleanroom HEPA air supply unit—is a critical terminal purification device used at the air-supply end of HVAC and cleanroom systems. It ensures that clean, filtered air is uniformly delivered into controlled environments such as laboratories, microelectronics facilities, pharmaceutical plants, and food processing areas.

This unit integrates a high-efficiency HEPA filter with a durable galvanized-steel or stainless-steel casing, designed to provide stable airflow, low leakage, and consistent ISO-level cleanliness.

Product Features

1. High-Quality Construction

• The box body is made from galvanized steel or optional stainless steel 304.

• Outer surface is electrostatically powder-coated for corrosion resistance and long service life.

• Optional thermal insulation layer available for temperature-sensitive environments.

2. Compact & Flexible Design

• Side air inlet or top air inlet options.

• Compatible with square or round flanges, easy to install in new projects or retrofit applications.

• Ideal when civil construction height is limited—can integrate directly with HEPA air vents for compact cleanroom design.

3. Reliable Airflow Performance

• Ensures stable airflow distribution and prevents eddy currents.

• Supports HEPA filters with 99.99% efficiency @ 0.3μm (H13/H14 optional).

• Tight sealing structure minimizes bypass leakage.

4. Cleanroom Compatible

Widely used in:

• Pharmaceutical cleanrooms (ISO 5–ISO 8)

• Electronics & semiconductor fabs

• Biotech facilities

• Laboratories & research centers

• Food production clean zones

• Hospital clean air supply systems

Technical Parameters

Efficient terminal HEPA filtration ensures uniform airflow and prevents turbulent zones inside cleanrooms.

Why Choose GCC HEPA Box?

• Designed specifically for cleanroom HEPA air supply systems

• Compatible with all standard HVAC ducting systems

• Support for custom sizes, OEM/ODM manufacturing

• Long service life with low maintenance requirements

• Installed in thousands of cleanroom projects worldwide

Optional Configurations

✔ Stainless steel housing
✔ Insulation layer
✔ Differential pressure port
✔ Round or square flange
✔ H13/H14 HEPA filter options
✔ Antibacterial internal coating

FAQ 

Q1: What is a HEPA box used for?

A HEPA box is installed at the air-supply end of cleanroom HVAC systems to deliver HEPA-filtered clean air into controlled environments.

Q2: Can the HEPA box be customized for different airflow rates?

Yes. GCC offers airflow capacities from 300–3000 m³/h with fully customizable dimensions.

Q3: Does the HEPA box support H14 filters?

Yes. Both H13 and H14 HEPA filters are supported, with efficiencies up to 99.995% @ 0.3μm.

Q4: Can it be used in pharmaceutical cleanrooms?

Absolutely. HEPA boxes are widely used in GMP pharmaceutical cleanrooms, medical facilities, and biotech labs.