Cartridge filter and method

摘要

An air filter cartridge receives air flow through a side filter media (A) for discharge through an orifice plate (B) carried at an air exit end opposite an opening in a wall, wherein a bellmouth air entrance member (C) within the air filter cartridge receives air flow from the filter media (A) and directs same to an evase (D) for reception thereby through an exit opening in the orifice plate for discharge through the exit opening in the wall.