The LabGard® ES (Energy Saver) AIR Limited model NU-545E Laminar Flow Biosafety Cabinet (LFBSC) is 230-volt NSF/ANSI49 and EN12469 listed bench/tabletop model, optionally available with a base support stand, for operation as a console model. The LabGard® ES Model NU-545E utilizes an Energy Saver DC ECM Motor optimally determined forward curved fan for each model size/width to maximize both energy efficiency and filter loading capacity. The Energy Saver ECM Motor is controlled to airflow set points via a solid-state DC motor controller with digital dual thermistor airflow sensors that provide an automatic compensation (constant volume control) for both filter loading and line voltage variances.