Large tubing pass-through port for use with Logic Vue Large Class II Enclosures. Allows passage of larger tubing through sidewall of Logic Vue for external equipment such as Aerosol Management Systems (AMS), chillers, and other supportive equipment. 0.75" OD. Inner tube and outer flange constructed of a 16 gauge 304 stainless steel. Adds 1.8" (4.6 cm) to overall width. Installation is required.