36400 IN-LINE STRAINER FINE MESH 50. Keeps very small debris & particles from clogging your bilge pump, helping pump run clearer, longer, & cutting down on repairs. Uses clear plastic housing for quick inspection & easy cleaning. 36400-0000 Ports are + inch barb and 36400-1000 Ports are + inch threads. Use 36138-0000 for fine screen 50 mesh replacement part.