Cleanroom Equipment
Static Pass Box
The Static Pass Box, also known as Static Transfer Window, is a material transfer device installed between clean and non-clean areas or between zones of different cleanliness levels.
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Static Pass Box: Material Transfer Window Between Clean Zones
The static pass box (static transfer window) is a material-transfer device installed between clean and non-clean areas, or between zones of different cleanliness. As a clean room pass box manufacturer, we build the cleanroom static pass box with interlocked doors and a sealed chamber to eliminate personnel traffic and cross-contamination.
It is part of our complete material-transfer family with the dynamic pass box, aluminum pass box and VHP pass box.
Static Pass Box Specifications
Standard configuration for the Wonclean static pass box. Material, size and gasketing are all customizable to project and cleanroom classification requirements.
| Construction material | 304 SS frame & interior, electropolished (Ra ≤ 0.4 µm) (316L option) |
|---|---|
| Dimensions (W×H×D) | 600×600×450 mm (custom to 900×900×600 mm) |
| Door mechanism | Dual interlocked gasketed swing doors, SS hinges, magnetic latches |
| Gasketing | EPDM or silicone (FDA-compliant), replaceable |
| Surface treatment | Passivated & electropolished interior, powder-coated exterior (RAL 9003) |
| Weight | 22–38 kg |
| Installation | Wall-mount, flange options for hardwall / softwall / modular |
| Power | None required (fully passive) |
| Compliance | ISO 14644-1 · USP <797> · EU GMP Annex 1 |
| Validation | IEST-RP-CC001.7 |
Values shown are standard/representative configurations. Confirm final certified figures against the project datasheet before specification — Wonclean issues a stamped datasheet with every quotation.
Static Pass Box Construction
The passive dual-door interlock is the engineering secret. With no moving parts that require power or airflow, electropolished stainless doors and gasketed seals maintain the pressure cascade and cut operator-induced contamination by over 60% — using only field-serviceable components.
Why Choose Our Static Pass Box
Zero-utility operation
Fully passive — no power, airflow or moving parts to maintain, lowering lifecycle cost.
Maintains pressure cascade
Dual interlocked doors prevent simultaneous opening and protect zone pressure differentials.
Cuts contamination > 60%
Eliminates door-to-door personnel movement, reducing operator-induced contamination.
Hygienic stainless build
Electropolished 304/316L interior (Ra ≤ 0.4 µm) is non-porous and easy to wipe down.
Field-serviceable
Replaceable gaskets and simple components keep maintenance fast and low-cost.
Standards-compliant
ISO 14644-1, USP <797> and EU GMP Annex 1, validated per IEST-RP-CC001.7.
Static Pass Box Applications
Specified as passive material transfer pass boxes across regulated and high-precision industries. See real cleanroom project case studies or browse the full cleanroom product range.
Get a project-specific quote in 24 hours
Send your cleanroom classification, floor area and finish requirements. Our Malaysia-based engineering team replies with a stamped datasheet, fire certificate and pricing — 7×24 technical support by email, phone or WhatsApp.
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