Patent ID: 7727299
Filing Date: 2010-06-01
Classification: B01D,Y10S

Abstract:
1. An air filter for a return air grille with a filter receptacle and a closeable cover with cover flange, comprising: a filter flange adapted to fit within the filter receptacle comprising a gasket, wherein the closure of the cover causes the cover flange to contact said filter flange and compress said gasket against the filter receptacle; a housing with walls defining an internal volume, said housing affixed to said filter flange whereby said housing extends beyond the filter receptacle away from the closeable cover; and, an extended pleat filter medium with a pair of side edges and a pair of ends comprising a filter medium and a means for reinforcing said filter medium, wherein said extended pleat filter medium is disposed within said internal volume in a substantially accordion-like shape and further comprising a means of substantially sealing substantially an entire perimeter of said extended pleat filter medium to an inner surface of said walls of said housing.