AC-A602F-15 is indeed a filter element part number from Pall Aeropower. While I couldn't locate a fully detailed product description publicly, here's what I've gathered:
 
Pall Aeropower: The "AC-A" prefix aligns with Pall Aeropower's numbering format for filter elements.
Industry Recognition: Multiple reliable sources in the aviation industry recognize AC-A602F-15 as a Pall Aeropower filter element.