Pusher Branded Pre-Filter PPF9 - For 45CAL and 50CAL

Pre-filters (also known as filter socks) are great at keeping large debris like bugs, grass, rocks, etc, from ever touching your filter, which makes maintenance even easier.
Additionally, our pre-filter is semi-hydrophobic, so when water hits the prefilter it beads and rolls off, keeping your filter drier which is best for longevity and performance. The airflow impedance of the pre-filter is negligible.