Patent ID: 8685129

Claim:
A framed air filter, comprising: a pleated, non-self-supporting air filter media comprising an upstream side and a downstream side and comprising a generally rectangular perimeter comprising 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 pleated non-self-supporting air filter media; and, a support grill adjacent the downstream side of the pleated non-self-supporting air filter media and consisting of a single perforate sheet that is not integral with any portion of the support frame and that is attached to each of the four portions of the support frame, wherein the support frame 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.