Main Specification for HEPA Box

Core Structure

• Primary Filter: Mostly a G4-grade non-woven fabric filter screen, which traps large-particle dust, hair, and other impurities. It protects the high-grade filters at the subsequent stages and extends their service life.
• Medium-Efficiency Filter: Usually an F8-grade bag filter, which further removes suspended particles below 5μm and reduces the load on the HEPA filter.
• HEPA High-Efficiency Filter: The core purification component, with a filtration efficiency of ≥ 99.97% for particles ≥ 0.3μm. It is the key to achieving ISO Class 5–8 cleanliness levels in cleanrooms. Some high-end models can be upgraded to ULPA ultra-high-efficiency filters to meet higher cleanliness requirements.
• Air Plenum Chamber: Stabilizes the airflow pressure, enabling air to pass through the filters evenly, avoiding excessively high or low local air velocity, and ensuring optimal air supply performance.
• Fan Section (Optional): Equipped with a centrifugal fan or axial fan to provide power for airflow. Fanless models need to be connected to the air supply duct of the cleanroom, relying on the air pressure from the central air conditioning system or Air Handling Unit (AHU) for air delivery.
• Air Outlet Panel: Mostly a diffuser panel or perforated panel, which diffuses the purified air evenly into the clean area and prevents the generation of eddy currents.

Products Description

• Housing/Casing: Constructed from stainless steel, aluminum, or coated galvanized steel for durability, cleanability, and corrosion resistance.HEPA/ULPA Filter: The core filtration element, mounted on the discharge side, providing final air cleaning.

• Centrifugal Blower Fan: Typically a backward-curved impeller design, providing stable airflow with good energy efficiency and low noise. Units may feature single or multiple fans (for redundancy).

• Pre-filter: Usually a primary (G4) or medium-efficiency (F8) filter located at the fan inlet. It protects the main HEPA filter and extends its service life by capturing larger particles.

• Control System:

  • Speed Control: Modern FFUs predominantly use Electronically Commutated (EC) motors, allowing infinite variable speed control via 0-10V DC, PWM signals, or network commands. This enables precise airflow adjustment and significant energy savings compared to older AC motor designs.

  • Monitoring: May include integrated differential pressure sensors (to monitor filter loading), status indicator lights, alarm functions, and communication interfaces for connection to Building Management Systems (BMS).

• Airflow Diffuser/Perforated Plate: Mounted below the filter, it helps to equalize and stabilize the discharged airflow, promoting uniform laminar flow.

Related Products

Company Profile

As a leading supplier of clean room system and clean room products,SHP is an organization that prides itself both on technical expertise as well as next level customer care.SHP offers Cleanroom Solutions to meet our clients' particular requirements specialized for pharmaceutical,biotechnology and microelectronic cleanrooms.We also provide a range of Clean Room products including wall panel,door&window and a series of clean room equipment.

As an ISO 9001:2015 certified organization,we are committed to continually improving our customer service programs while meeting or exceeding your product quality criteria.With our comprehensive customer solution offerings,excellence in products,and decades of technical expertise,we are confident that SHP can match the best to your application.

Our Customers

Customer Photos

Packing and Shipping

FAQ

Q1: Where is your company?

A1:Our company is located in Suzhou City, close to Shanghai. It's a 1.5-hour drive from PVG Airport.

Q2: Are you a manufacturer or a trading company? What can I buy from you?
A2: We are manufacturers. We focus on cleanroom projects, air showers, FFUs, through boxes, dosing rooms, laminar flow hoods and benches, AHUs, and sealed doors and Windows. 

Q3:When is your delivery time? 
A3: If your cleanroom project includes AHU, the delivery time is 35 days. If you purchase goods without an AHU, the delivery time is 10 days. 

Q4: How long is your warranty period? What kind of after-sales service can you offer?
A4: Our warranty period is two years after the completion of the project. During the warranty period, if there are any problems, we will replace it. If you can't handle it, we will send an engineer to solve it for free.

Q5:Can you conduct cleanroom validation? 
A5: Yes, we can offer documentaries of DQ, IQ, OQ and PQ. Still fat & Sitting. Product operation manual, maintenance guide and a complete set of cleanroom drawings. 

Q6:What are your advantages?
A6: We have a complete technical team consisting of 12 senior cleanroom and HVAC engineers to provide you with technical support. We have completed over 2,100 cleanroom projects in China and overseas. Such as Japan, Indonesia, Thailand, Bangladesh, India, North Macedonia, Saudi Arabia, Yemen, Russia, Moldova, Switzerland, Norway, the United Kingdom, Spain, France, Belgium, Kuwait, Tunisia, Mauritius, Sri Lanka, Mongolia, Philippines, Nepal, Sudan, Somaliland, Australia, New Zealand, Canada, Algeria, Egypt, Singapore, and the United States.