The SCS 497AJH HEPA Vacuum, 120 VAC with 0.12 Micron Media HEPA Filter is a groundable vacuum unit with conductive/dissipative accessories for use in ESD protected areas. This model features filtration that removes 99.97% of all particles with a diameter of 0.3 microns or more. The included storage compartment in top of housing stores accessories and detachable power cord.