Class II A2 Biological Safety Cabinet FM-BSC-A400 Fison Class II A2 Biological Safety Cabinet is a floor-standing unit meeting NSF Class II A2 standards. It features a tough glass front window, HEPA filters with life indicators, LCD display, I.V. bar with hooks, drain valve, waterproof socket and more. With 35% air exhaust and 65% recirculation, it ensures operator safety and a contaminant-free environment.