The A1B1E1 Adflo gas filter delivers reliable breathing protection. Designed to capture organic, inorganic, and acid gases and vapours, when monitored and changed regularly, this filter is an essential safety component for the Adflo Powered Air Respirator.Features and Benefits Provides protection from harmful gases and odours Easy to change over Compatible with all Adflo replaceable componentsNotes Must always be used alongside the Adflo particle filter When using the gas filter, you may also require 83 40 09 - breathing tube and silencer, and 83 76 31 - heavy-duty battery