Maintain the absolute integrity of your cleanroom with our professional Pass-Through Window drawing. This free MechStream download is the essential blueprint for any dust-free sterilization work environment, including pharmaceutical labs, electronics manufacturing, and biomedical research facilities. The primary function of a pass box is to allow the transfer of materials and products into or out of the controlled environment without compromising its sterility or particle count. This prevents the high-traffic flow of personnel, which is a major source of contamination.

Building a pass-through from scratch is a high-stakes design challenge. It requires precise engineering, especially for interlocking door mechanisms and smooth, non-shedding surfaces. Our comprehensive drawing package provides a fabrication-ready solution, saving you critical design time and costly errors. This design is engineered for cleanroom compliance, featuring a robust, easy-to-clean structure with coved corners to prevent particle buildup. It’s the perfect foundation for a static, semi-active, or fully active pass box.

The download includes DWG, DXF, and PDF formats, all fully editable. This allows you to adapt the design to your specific wall thickness, add custom features like UV-C sterilization lamps or HEPA-filtered air showers, or change the materials to 304/316L stainless steel. This drawing is indispensable for facility engineers, cleanroom builders, and specialty fabricators. Download this file today to build a compliant, reliable transfer hatch that protects your critical environment.

Key Features:

  • Mechanical Interlock System: The drawing details a reliable interlocking mechanism, ensuring that only one door can be opened at a time to maintain air pressure and prevent cross-contamination.
  • Hygienic/Aseptic Design: Features coved (rounded) internal corners and smooth, flush surfaces (designed for stainless steel) to eliminate particle traps and allow for easy sterilization.
  • Airtight Gasket Seals: Includes precise channel details for high-performance gaskets on both doors, ensuring a complete seal to protect the controlled environment.
  • Fabrication-Ready Plans: This is a complete sheet metal design with flat patterns, bend lines, and welding callouts for efficient, accurate manufacturing.
  • Modular & Adaptable: The base design is easily adaptable for adding optional components, such as a UV-C germicidal lamp, an internal power outlet, or a HEPA/ULPA filter supply.