Patent ID: 7641708

Claim:
An air filter assembly comprising: (a) a module in a shape of a box including an upper wall panel, side wall panels, and an access door; the module including an air inlet, an air outlet, and a tube sheet separating the module into a dirty air chamber and a clean air chamber; (i) the air inlet providing a dirty air volume to the module, the dirty air volume having an air flow direction; (ii) the tube sheet including a first air flow aperture therein; and (b) a yoke assembly; (i) the yoke assembly being adapted to operably receive and support a first filter element positioned in the dirty air chamber in air flow communication with the first air flow aperture in the tube sheet; the yoke assembly being adapted to receive the first filter element which includes an extension of filter media disposed between a proximal end cap and a distal end cap; the filter media, proximal end cap and distal end cap each defining a long axis and a short axis relative to a perpendicular direction of the filter media, said proximal end cap and said distal end caps having equal dimensions; and a ratio of the short axis to the long axis being 0.7-0.9.