Patent ID: 7588629

Claim:
A filter cassette having a semi-rigid structure comprising: a first and second rectangular side panel; at least one pair of filter media containers wherein each of said filter media containers has opposing first and second end plates; each of said filter media containers also having a pair of opposing rectangular media screens extending between said first and said second side panels, said at least one pair of containers in a “V” configuration and having adjacent said first end plates, one of said at least one said adjacent first end plates having a media fill aperture located on a non-sealing side of said filter cassette opposite a sealing side of said filter cassette, said second end plates on said sealing side of said cassette extending between corners of said first and said second side panels forming a substantially smooth sealing surface; a fill cap removeably attached to said one of said at least one adjacent first end plates thereby enclosing said media fill aperture; wherein said second outermost end plates and said first and second side panels have a seal location indentation with a seal between the outer edges of said first and second side panels substantially parallel and proximate outer longitudinal edges of said second outermost end plates to adequately seal said sealing side of said cassette.