Patent ID: 8747505

Claim:
A filter system, comprising: a housing having a generally rectangular inlet opening through one side thereof, and an outlet opening through a different side, the rectangular inlet opening being surrounded by a generally rectangular sealing surface; a door having a generally rectangular seating surface, the seating surface surrounding a thru-port opening, the door movable between an open position and a closed position relative to the housing, the through port opening being aligned with the rectangular inlet opening when the door is in the closed position; a hinge connecting the door to the housing, wherein the door pivots between open and closed positions about the hinge; a generally rectangular panel pre-filter seated along the rectangular seating surface of the door; at least one V-bank primary filter positioned in the rectangular inlet opening, the at least one V-bank primary filter having a generally rectangular peripheral flange in general alignment with the generally rectangular sealing surface, the at least one V-bank primary filter having a plurality of filter media sections projecting away from the peripheral flange and into the interior of the housing; a latch having cooperating components between the door and the housing, adapted to keep the at least one generally rectangular panel pre-filter positioned inline and upstream of the at least one V-bank primary filter; and a seal between the generally rectangular peripheral flange of the at least one V-bank primary filter and the generally rectangular sealing surface.