Vent the gas is an objective in Borderlands 2 (Borderlands2).

Vent the gas is an objective in the Story Mission, The Cost of Progress in Borderlands 2: Commander Lilith and the Fight For Sanctuary


  • Having made it to to the top of the infested portion, head over to the right (North) from the large bay windows.
  • This will lead you into the Experimentation Room.
  • In here, deal with the Infected Bruiser.
  • After that, go over to the Western side of the room, to the right of the door, to find the wheel valve needed to activate the next set of fans.