Patent ID: 7311747

Claim:
A cylindrical air filter element comprising: (a) an extension of filter media configured and arranged in a plurality of media V-packs, each media V-pack having: (i) a first portion and a second portion, each of the first portion and the second portion having an external edge, an outermost edge, an internal edge and an innermost edge; (ii) the external edges of the first and second portions joined at an angle of about 4 to 26 degrees; (iii) the internal edges of the first and second portions joined at an angle of at least 4 degrees less than the external edge angle; (iv) the outermost edge of each portion being longer than the innermost edge of the respective s portion; (v) each of the first and second portions having a plurality of media pleats at a density extending generally parallel to the outermost edge of its respective portion; and (vi) a pleat spacing mechanism maintaining the pleat density; (b) the plurality of media V-packs configured to form a cylindrical arrangement.