HD-INERTSYS System is a clean agent fire suppression system (IG55, IG541, IG100, IG01). It is particularly useful for suppressing fires in hazards where an electrically non-conductive medium is required; where clean-up of other extinguishing agents is a problem; or where the hazard is normally occupied and requires a non-toxic extinguishing agent. It is very effective in extinguishing Class A, Class B as well as Class C fires. HD-INERTSYS works by completely flooding the room, reducing the oxygen content necessary for combustion, but at the same time ensuring that there is adequate oxygen concentration for use in occupied area. HD-INERTSYS is VdS Approved.