Patent ID: 7827761

Claim:
Spacer stock for making a spacer frame for a multi-sheet unit, comprising; a first supporting surface; a second supporting surface opposite to, and facing away from, the first supporting surface; a base surface between and connecting the first and second supporting surfaces; and wherein the first and second supporting surfaces and base surface are made of plastic and a rate of moisture and/or gas movement through portions of the first and second supporting surfaces is greater than a rate of moisture and/or gas movement through the base surface wherein the first sheet supporting surface is an outer surface of a first upright member, the second sheet supporting surface is an outer surface of a second upright member, the first and second upright members joined to the base to provide the spacer stock segment with a generally U-shaped cross section; the first upright member has an inner surface opposite to the outer surface; the second upright member has an inner surface opposite to the outer surface of the second member, and the base has an inner surface facing space between the first and second upright members and an opposite outer surface with a groove in the inner surface of the base, and wherein the first and second upright members at the position designed as a bend line for the at least one corner have a V-shape cut out with apex of the V-shape cut out of each of the upright members below the inner surface of the base, and the first and second upright members each comprise an extension located at the distal end of the upright members with respect to the base member and extending from the upright members toward one another over the inner surface of the base with the extension of each of the upright members continuous at the V-shaped cut out of its respective upright member.