A lightweight gas mask with a sealed filter issued by the Russian Military. Made of rubber, this mask is extremely comfortable to wear, but its design offers limited visual range.
  — Item Description 

The PBF Gas Mask is a Face item added in the 2-25-09 Patch.


It is an small improvement over the MK1 Gas Mask, as the PBF provides the wearer with +42% protection from poison gas which is only 2% higher than then the MK1 Gas Mask.



  • The PBF Gas Mask is useful in Cabin Fever and Black Lung because it greatly reduces the effects of poison gas boundaries for the wearer.
  • Although the description says it 'offers limited visual range,' wearers will still have a full view of the screen.