Patent ID: 9049838
Filing Date: 2015-06-09
Classification: A01K,B01D,F24F,Y10T

Abstract:
1. A filter assembly, comprising: a filter housing assembly comprising a rectangular inlet frame having a rectangular inlet opening, wherein the rectangular inlet frame defines a rectangular recess having a seating surface in surrounding relation of the rectangular opening; a primary filter comprising at least one of a V-bank filter and a rectangular filter that includes filter media that is at least 3 inches deep, the primary filter having an outer peripheral flange seated against the seating surface, the primary filter extending through the rectangular inlet opening into the filter housing assembly; a prefilter upstream of the primary filter and seated against an upstream face of the outer peripheral flange; a rectangular wall of the inlet frame surrounding the rectangular inlet opening; a plurality of posts arranged around the rectangular wall; a first set of retainer clips mounted on the rectangular wall in a first plane releasably securing the primary filter along the seating surface; a second set of retainer clips mounted on the posts releasably securing the prefilter over the primary filter; and wherein the first and second sets of clips are rotatable relative to the rectangular inlet frame to have a compression portion that moves over the rectangular recess for causing compression, wherein the clips can be rotated such that the first and second sets of clips are clear of the rectangular recess to allow removal of the primary filter and the prefilter.