Patent ID: 7691165

Claim:
A device attachable to a filter pack for disposing in a fluid flow channel comprising: a first frame member having a first border element having a first open center portion therein, wherein said first border element having four first side walls bendable along a line parallel to a peripheral edge of each of said first side walls; an attachment tab attached at an end of each of said first side walls; a second frame member having a second border element having a second open center portion therein, wherein said second border element having four second side walls bendable along a bend line parallel to an outer edge of each second side wall; each of said second side walls having a sealing flap bendable along said outer edge; and said second frame member disposable on said first frame member with each of said second side walls overlapping and attached to one of each of said first side walls and said sealing flaps bent to be adjacent to said second side walls.