The NU-640 is a full console model with a mechanical auto-rising base stand and built-in ergonomic footrest. With an extra large 14 inch (356 mm) hinged access opening and only a 78.25 inch (1988) unit height, this animal handling biological safety cabinet easily handles large rat cages in the smallest of vivarium laboratories. This BSC unit comes standard with heavy-duty reinforced casters and fits through most standard doorways for extra mobility. Like all other NuAire airflow products, the NU-640 utilizes a single ultra-high efficiency DC ECM motor with forward facing fan blades that reduces overall energy consumption and automatically compensates for variances in filter loading. A built-in work tray prop-up rod allows easy access to the single mesh pre-filter and makes cleaning the work zone a breeze.