Framed air filter and method of making

摘要

A framed air filter and method of making. The framed air filter includes a non-self-supporting air filter media with a generally rectangular perimeter with four major edges, a support frame comprised of four support frame portions each portion being mounted on one of the four major edges of the non-self-supporting air filter media, and a support grill that is attached to each of the four portions of the support frame but that is not integral with any portion of the support frame.

主权项

1. A method of making a framed air filter, comprising:
attaching outwardmost portions of a support grill to portions of at least two support frame pieces to which the outwardmost portions of the support grill are respectively adjacent and in overlapping relation, so as to form an attached support grill; positioning a pleated non-self-supporting air filter media adjacent to, and in overlapping relation with, the attached support grill, and attaching at least outwardmost portions of the pleated non-self-supporting air filter media to the attached support grill and/or to the at least two support frame pieces; folding each of the at least two support frame pieces around the outwardmost portion of the non-self-supporting air filter media so as to form a channel frame piece with a sidewall and an upstream flange and a downstream flange; and, attaching each support frame piece to a neighboring support frame piece to form a support frame that is an at least generally U-shaped channel frame comprising at least a downstream flange and an upstream flange that is oriented at least generally parallel to the downstream flange, and wherein at least a portion of the downstream flange is in overlapping relation with at least a portion of the support grill and is attached thereto.