This system is based on an air in-bleed to the extract such that in the event of a breach the air inflow to the Glove box will automatically take the path of least resistance, see Fig 6. Thus if a breach occurs the depression in the breached glove box and header will collapse and the air inflow will increase through the breached glove box and decrease through the air in-bleed until a pressure equilibrium is reached between the breached glove box and inbleed air routes depending on the breach area.