Boben | Global Leader in Cleanroom Equipment& HEPA Filtration
China Pass Box Manufacturer
—— Professional cleanroom pass box manufacturer. Specializing in clean space logistics isolation and handover control.
Leading Cleanroom Pass Box Manufacturer in China
We don’t just manufacture pass box; we build secure pathways for clean spaces.
As China’s leading cleanroom pass box manufacturer, we specialize in providing high-performance, validated pass box solutions for the global cleanroom industry. With over a decade of experience in cleanroom system design and manufacturing, we deeply understand the critical role pass boxes play in clean environments—they serve not only as material transfer conduits but also as vital barriers preventing cross-contamination while maintaining clean zone pressure differentials and airflow control. Every pass box we produce undergoes rigorous testing for airtightness, interlock functionality, and cleanliness levels, ensuring long-term stable operation while complying with international standards including ISO 14644, GMP, and FDA.
We operate advanced stainless steel fabrication and HEPA assembly lines, offering a comprehensive product range from static, dynamic, and electronic interlock pass box to air shower models, along with OEM/ODM customization services. Whether for pharmaceutical plants, biolaboratories, electronics factories, or food and medical cleanrooms, we deliver scientifically tailored solutions aligned with each client’s project environment.
Our Cleanroom Pass Box Product Series
As China’s leading cleanroom pass box manufacturer and supplier, we offer a diverse range of clean transfer window products. All products are designed and manufactured in compliance with international standards including ISO 14644, GMP, FDA, and EN1822, achieving industry-leading performance in airtightness, interlock safety, cleanliness levels, and operational convenience.
| Specification Item | Technical Parameter | Standard / Reference |
|---|---|---|
| Material | SUS304 / SUS316L Stainless Steel | GMP / FDA / ISO 14644 |
| Air Tightness | ≤ 0.5 Pa Pressure Leakage | ISO 14644 / GB50073 |
| HEPA Filter Efficiency | ≥ 99.995% @ 0.3 μm (H14) | EN1822 / IEST RP-CC001 |
| Interlock Type | Mechanical / Electronic Interlock | Internal Standard |
| Noise Level | ≤ 65 dB (at operation) | EN ISO 11201 |
| UV Sterilization Lamp | 15W – 30W (Optional) | CE Certified |
| Power Supply | 220V / 50Hz or Customized | IEC Standard |
| Surface Finish | Mirror Polished / Hairline Finish | Ra ≤ 0.8 μm |
| Cleanliness Level (Dynamic Model) | ISO Class 5 Inside Chamber | ISO 14644-1 |
| Fan Motor (Dynamic Type) | Low-noise centrifugal fan | Internal QC Standard |
| Door Type | Double-layer Tempered Glass Door | GMP Design Requirement |
| Control System | Microcomputer-based Electronic Lock Control | Client Requirement |
| Installation Method | Wall-mounted / Floor-standing / Customized | Project-specific |
| Optional Features | UV Lamp, Pressure Gauge, Air Shower, HEPA Upgrade, Buzzer Alarm | Customer Request |
What is a Cleanroom Pass Box?
Cleanroom Pass Box is a sealed device installed in cleanroom walls or between areas of different cleanliness grades. It facilitates the transfer of items or samples between two spaces, thereby avoiding the risk of cross-contamination caused by personnel frequently entering and exiting the clean area.
Through its airtight structure, interlocking system, and air purification mechanism, it enables the secure transfer of materials between areas of differing cleanliness levels.
Within cleanrooms, the Pass Box functions not merely as a “transfer window,” but as a critical node for maintaining environmental stability and preventing contamination spread.
By controlling the transfer process, the Pass Box enables:
- Prevention of direct air exchange between zones of differing cleanliness levels, maintaining pressure differential balance;
- Blocking of transmission pathways for particles, microorganisms, and contaminated airflows;
- Reduction in personnel access frequency, enhancing clean space operational efficiency;
- Ensuring production process safety and product quality consistency.
Benefits of Cleanroom Pass Boxes
Every Cleanroom Pass Box undergoes rigorous testing to ensure safe, clean, and traceable material transfer.
- Excellent Air Tightness: Utilizes a double-seal structure and precision welding techniques to ensure zero air leakage and stable cleanliness levels.
- Secure Interlock System: Mechanical or electronic interlock design prevents simultaneous opening of both doors, effectively avoiding cross-contamination.
- Built-in HEPA Filtration System: Dynamic and air shower pass box are equipped with high-efficiency HEPA filters to ensure clean, dust-free air during transfer processes.
- Cross-Contamination Prevention: Fully stainless steel rounded corners and dust-free sealing strips prevent particle accumulation and contamination spread.
- Smart Control Function: Supports electronic interlocking, UV lamp synchronization, audible/visual alarms, and door-opening logging for enhanced operational safety.
- Easy-to-clean Design: Internal smooth, seamless construction with no dead corners facilitates cleaning and disinfection, meeting GMP hygiene requirements.
- High Customization Flexibility: Supports customization of dimensions, materials, interlocking methods, filtration systems, and control logic to adapt to diverse project needs.
Cleanroom Applications of Our Pass Box
GMP/FDA compliant
anti-static and dust-free transfer
operating rooms, laboratories
sterile material transfer
secure sample transport
Why Choose Us as Your Pass Box Manufacturer in China？
Choosing us as your Pass Box Manufacturer in China means choosing consistent quality, technical expertise, and long-term trust. We don’t just manufacture pass boxes; we provide safe, intelligent, and verifiable material transfer solutions for cleanrooms worldwide.
Choosing us means choosing consistent quality, professional support, and a long-term, reliable partner.
- Professional Expertise: With over 15 years of cleanroom equipment manufacturing experience and proficiency in international standards such as GMP and ISO 14644, we deliver proven solutions for global pharmaceutical, biotech, electronics, and medical projects.
- Strict Quality Control: Certified under ISO 9001, CE, and SGS,
each pass box undergoes rigorous testing for airtightness, interlock functionality, safety, and cleanliness. - Advanced Production Capability: Equipped with laser cutting, CNC machining, and HEPA assembly lines to ensure high precision, short lead times, and stable performance.
- Flexible Customization: Supports OEM/ODM with customizable dimensions, structures, and control logic to accommodate varying cleanliness levels and engineering requirements.
- Global Service & Support: Products exported to over 30 countries, with installation guidance, technical documentation, and 24/7 after-sales service provided.
Frequently Asked Questions about Cleanroom Pass Box
Which international standards do your pass box comply with?
Answer: Our pass-box chambers strictly adhere to international cleanroom standards including ISO 14644, GMP, FDA, EN1822, and GB50073, and are certified under ISO 9001, CE, SGS, and CNAS.
All equipment undergoes airtightness, interlock functionality, HEPA filtration efficiency, and noise testing prior to shipment to ensure reliable product performance.
Can pass-box be customized?
Answer: Yes, we offer OEM/ODM customization services.
Configurations such as dimensions, door opening direction, interlocking mechanisms, materials (304/316L stainless steel), filtration systems, and UV lamps can be tailored to customer requirements. We provide matching structural designs and technical solutions for projects based on customer drawings or site conditions.
What is the difference between a dynamic pass-through chamber and a static pass box?
A static pass box is primarily used between areas of the same cleanliness level. A dynamic pass box incorporates a built-in fan and HEPA filter, making it suitable for zones with different cleanliness levels. It automatically filters air to maintain high cleanliness within the transfer chamber.
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Why Us is Trusted by 1000+ Clients
Professional Cleanroom System Integration Capabilities
As a specialized Cleanroom Equipment Manufacturer, we not only produce individual equipment but also possess system-level clean environment engineering capabilities.
Verifiable Product Quality and Manufacturing Reliability
Our products strictly adhere to international cleanroom standards and quality control systems throughout design and manufacturing. Each unit undergoes HEPA/ULPA efficiency testing, airflow and velocity testing, noise and energy consumption verification before shipment. We provide CNAS, SGS, or third-party certification reports for full traceability.
Global Customer Trust and Ongoing Technical Support
We serve a worldwide client base, with products exported to over 20 countries and regions including the United States, Germany, South Korea, Malaysia, the United Arab Emirates, and Singapore, earning long-term trust from international customers.