The CellGard(TM) Energy Save Model NU-480 Laminar Flow Biological Safety Cabinet (LFBSC) is a Class II, Type A2 bench/table top model, optionally available with a base support stand, for operation as a console model. Model NU-480 provides Personnel, Product, and Environmental Protection utilizing a Energy Saver 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.