Replacement Pre-Filters from CF Group extend the working life of your Can-Filter. Use as the first line of defense against dust and contaminants from clogging the pores of the activated carbon. Available for ALL Original Can-Filters.
• Easy to use and change
• Very low air resistance
• Extends the life of your air filter
• Available in ALL sizes (from 33 to 150 — select from drop down menu)
A Pre-Filter is used to block large dirt and dust particles from getting into the pore structure of the carbon. To prevent a decrease in airflow through the filter they should be replaced when dirty.