Patent ID: 7392625

Claim:
A nail fin used with a fenestration frame assembly fastened in a building support structure, the nail fin comprising: a bendable metallic flange member having an anchor portion with a horizontal leg joined integrally at a single 90° angle to a vertical leg retained in the frame assembly, the anchor portion being pivotally connected to a straight attachment portion fastened flush against the support structure along a hinge defined by a series of spaced apart openings formed through the flange member, the metallic flange member being formed with a strip extending along outer surfaces of the attachment and anchor portions and an inner surface of the anchor portion covering and sealing the openings and simultaneously defining barbed elements around the vertical leg of the anchor portion, and wherein the attachment portion of the metallic flange member is formed with another strip separated from the strip covering the openings, extending continuously along the outer surface of the attachment portion and an inner surface of the attachment portion and defining a solid attachment template fastened to the support structure and forming a sealing finger disposed at an angle relative to the attachment portion and engaged against the support structure.