In modern cleanrooms, laboratories, and medical environments, the safe transfer of items is a critical process. Today, I will provide a detailed introduction to a mechanical interlocking Pass Box design solution made entirely of SUS304 stainless steel. This product combines safety, hygiene, and practicality, making it an ideal choice for high-standard clean environments.

Core Materials and Structural Design
This Pass Box is constructed entirely from SUS304 stainless steel, a material known for its excellent corrosion resistance and compliance with stringent hygiene requirements. As a food-grade stainless steel, SUS304 fully meets GMP certification standards, making it particularly suitable for industries such as pharmaceuticals, food processing, and precision electronics.
The interior features rounded corners, a design detail that not only enhances aesthetics but, more importantly, eliminates hard-to-clean right angles where contaminants could accumulate. The smooth transitions make cleaning more thorough, aligning with the strict hygiene demands of cleanroom environments.
Professional Functional Configuration
UV Sterilization System:
l Equipped with an efficient germicidal lamp (labeled 5 in the diagram)
l Includes a dedicated lamp switch (labeled 1) for easy operation
l Ensures thorough disinfection before and after item transfer, maintaining a sterile environment
Safety Interlocking Mechanism:
l Mechanical interlocking design prevents both doors from opening simultaneously
l Effectively prevents cross-contamination and maintains pressure differentials between clean and non-clean zones
l No electrical power required, ensuring high reliability and simple maintenance
Visualization Design:
l Single-layer tempered glass window (labeled 3)
l Allows clear visibility of transferred items and internal conditions
l Tempered glass provides enhanced safety, breaking into small, blunt fragments if damaged
User-Friendly Details
Ergonomic handle (labeled 2) for effortless door operation
Properly positioned power outlet (labeled 4) for easy installation and maintenance
Seamless, dead-space-free structure for simplified cleaning and disinfection
Customizable dimensions based on customer requirements
Recommended Applications
This mechanical interlocking Pass Box is particularly suitable for: