A replacement / spare main filter for use with Weltek Airkos blower units used with Weltek air fed welding and grinding helmets.
This item is the main filter, part number CR7050. It is the round plastic cartridge containing filter material.
The pre-filter (part number CR7060) fits over the top of this part.
Filters should be changed when the Airkos clogging alarm sounds or when the user deems appropriate.
The pre-filter also available extends the life cycle of the main particulate filter.