Canadian C3 Respirator

The Canadian C3 Respirator was first issued in the early 60s, it is still one of the best gas mask designs available. The mask was based on the British Light-Anti-Gas Mark 3 respirator.
The mask was widely mass produced and sold, and was built under license by the Dutch.

British Light-Anti-Gas Respirator Mark 2

The first mass issued British gas mask to use replaceable filters.
It takes 60mm filters on the left cheek of the mask.
This mask was developed from the prototype Mark 1 LAG respirator, and the Mark 3 LAG design was used by Canada to create the C3 Gas mask.