| http://www.w3.org/ns/prov#value | - a thermal break fabricated from a polymer, the thermal break being an additional component other than the rail, the checkrail, the first stile, and the second stile, wherein the thermal break is only positioned between the interior rail portion and the exterior rail portion of the sliding sash window, and wherein the thermal break has a single central hollowed-out cavity, the thermal break compris
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