Single Pass-Trough is designed for the safe transfer of materials between environments with different degrees of contamination. The structure is free of exposed fastenings and has removable parts to facilitate maintenance. Inside adjustable feet ensure stability and adaptability. Opening is controlled by a manual interlock system with red/green LED backlit buttons, which indicate the operating status and prevent simultaneous openings. Available with anti-RX protection (1, 2 and 3 mm lead) for environments with ionizing radiation.