A replacement/spare main filter for use with Weltek Airkos blower units used with Weltek air fed welding and grinding helmets. The pre-filter (product code ARK9591001A) fits over the top of this part.

Notes
• 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