Designed to eliminate cross‑contamination between two cleanrooms during material transfers. Static pass boxes prevent air from flowing from one cleanroom to another, ensuring that not only the cleanrooms maintain their class levels during material movements, but also eliminate the possible disruption of the designed operating conditions, such as air changes, air flow patterns, and sudden or frequent losses of pressure. Static pass boxes are available in a very wide variety of designs and options to meet your specific application requirements.

Designed to be integrated with existing HVAC system, semi‑active pass boxes use the principal of inflation to protect your clean environment and is the recommended to be installed between a cleanroom and a non‑validated environment, or between two cleanrooms that demand higher levels of cross‑contamination protection. These pass boxes are equipped with HEPA filters and may be supplied with a variety of standard and optional accessories.