Static and Dynamic Pass Boxes are essential cleanroom equipment used to safely transfer materials between controlled and uncontrolled environments, minimizing cross-contamination. At SAM HVAC Engineers, we offer high-quality pass boxes constructed from stainless steel with smooth, easy-to-clean surfaces. Static pass boxes are ideal for non-critical transfers, while dynamic models feature HEPA filters and motorized air circulation to ensure particle-free transfer of materials in sterile zones.