Patent ID: RE43533

Claim:
An elongated spacer stock used in the manufacture of a spacer frame to separate sheets of an insulating unit, the spacer stock comprising: an elongated base; a first elongated leg having a first member and a second member joined together to have a generally U-shaped cross section; a second elongated leg having a first member and a second member joined together to have a generally U-shaped cross section; wherein the first and second legs are spaced from and out of contact with one another and joined to the base to provide a generally U-shaped cross section with open end of the U formed by the first and second legs and base in a first direction, the U shape of the first leg open in a second direction, and the U-shape of second leg open in the second direction with the first and second directions opposite to one another, and the first and second legs spaced from and out of contact with one another.