The Powder Coating HEPA Diffuser Air HEPA Filter Box is a high-performance terminal air supply device designed for cleanrooms requiring stringent air cleanliness. The unit integrates a welded cold-rolled steel cabinet, a specialized filter compression system, and a high-efficiency HEPA filter to ensure reliable airflow and excellent sealing performance.
The cabinet adopts a high-quality anti-leakage structure, finished with electrostatic powder coating to provide strong corrosion resistance and long service life. The unique compression device ensures the HEPA filter remains tightly sealed while allowing quick and convenient replacement.
This HEPA diffuser unit is suitable for semiconductor, electronics, pharmaceutical, biotechnology, food, medical, and other high-level clean environments.
Key Features
High-Quality Cabinet Structure
- Welded cold-rolled steel construction with enhanced anti-leakage design
- Powder-coated surface for corrosion resistance and durability
- Integrated insulation for stable performance up to 80°C
- Lightweight, rigid structure with seamless sealing technology
Advanced Filter Compression Device
- One-piece stamped steel frame ensures a smooth gasket contact surface
- Compression devices mounted on all four sides ensure excellent sealing
- All compression components rotate freely for easy HEPA filter replacement
- Compatible with mini-pleated and clapboard HEPA filters
Pre-Installed Testing Port
- Built-in testing port for onsite DOP/PAO or atmospheric dust testing
- Supports filter resistance, leakage, and lifespan evaluation
Efficient Air Supply Performance
- Strong ventilation capability with high airflow volume
- Stable, low-resistance air distribution
- Available in various structural dimensions for different cleanroom layouts
- Equipped with lifting lugs for quick ceiling installation
Technical Parameters
Mini-Pleated HEPA Filter Type
| Cabinet Size (mm) |
Filter Size (mm) |
Flange Size (mm) |
Rated Airflow (m³/h) |
| 534 * 534 * 380 |
484 * 484 * 96 |
320 * 200 |
1000 |
| 660 * 660 * 380 |
610 * 610 * 96 |
400 * 200 |
1500 |
| 915 * 610 * 380 |
915 * 610 * 96 |
500 * 200 |
2000 |
| 1220 * 610 * 380 |
1220 * 610 * 96 |
500 * 300 |
3000 |
HEPA Filter with Clapboard
| Cabinet Size (mm) |
Filter Size (mm) |
Flange Size (mm) |
Rated Airflow (m³/h) |
| 534 * 534 * 380 |
484 * 484 * 220 |
320 * 200 |
1000 |
| 660 * 660 * 380 |
610 * 610 * 220 |
400 * 200 |
1500 |
| 915 * 610 * 500 |
915 * 610 * 220 |
500 * 200 |
2000 |
| 1220 * 610 * 500 |
1220 * 610 * 220 |
500 * 300 |
3000 |
Customized sizes and flange dimensions are available upon request.
FAQ
Q1. What is a HEPA Box used for?
A HEPA Box is the terminal HEPA filtration device installed at the end of cleanroom air supply systems. It delivers purified air into the cleanroom and maintains the required cleanliness level.
Q2. What types of HEPA filters can be used?
This unit supports both mini-pleated and clapboard (separator) HEPA filters, depending on the airflow and efficiency requirements.
Q3. How often should the HEPA filter be replaced?
Typically every 1–2 years, depending on usage, cleanliness level, and pressure resistance readings obtained via the testing port.
Q4. Is it suitable for pharmaceutical and semiconductor cleanrooms?
Yes. It is widely used in pharmaceutical cleanrooms (GMP), semiconductor fabs, electronics plants, precision assembly, laboratories, and medical facilities.
Q5. Can the size be customized?
Yes, cabinet dimensions, flange sizes, and filter specifications can be fully customized based on your cleanroom design.
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