FILTER ELEMENT HAVING CENTER PIECE AND METHODS

摘要

A core construction (20) for use in a filter element (10) includes a tubular member having a wall with opposite first and second ends. The first end is adaptable for engagement with structure, such as a frame (28) utilized with a filter element. The second end is also engageable with external structure, such as a handle (22). Preferably, a filter element (10) is constructed by rolling a media construction (14) around the core construction. The media construction (14) includes a corrugated sheet secured to a flat sheet rolled around the core construction into a coiled construction (24). The coiled construction (24) has inlet flutes and outlet flutes. Methods for using and assembling filter elements preferably use core constructions as described herein.