Patent ID: 7520913

Claim:
A filter element comprising: (a) three, spaced, generally planar filter panels; (i) the filter element having no rounded surfaces that provide filtration; (b) a support structure supporting the three generally planar filtration panels spaced from one another around a filter interior to form a three-sided element; (i) the support structure having a first, closed, end and a second, opposite, end with an outlet aperture therein; (c) the outlet aperture being a non-circular outlet aperture; (i) the support structure defining the non-circular outlet aperture; (ii) the outlet aperture being a three-sided aperture with three corners; each one of the three corners being directed toward a portion of the support structure between two adjacent ones of the three generally planar filtration panels; and, (d) a triangular shaped seal surrounding the outlet aperture.