Patent ID: 8900679

Claim:
A window unit comprising: a vacuum IG unit comprising first and second spaced apart glass substrates, a first low pressure space having pressure less than atmospheric pressure being located between the first and second glass substrates, a plurality of spacers disposed between the first and second glass substrates, and a hermetic edge seal attaching the two substrates to each other; wherein the vacuum IG unit has a bottom side, a top side, and a pair of vertically extending sides; wherein at least a portion of at least one of the sides of the vacuum IG unit is mounted in a channel or recess defined in a structurally insulated panel, the structurally insulated panel comprising first and second opposing sheets with an insulating material therebetween, wherein at least the portion of the vacuum IG unit in the channel or recess is surrounded by the insulating material of the panel on at least two sides thereof; and a phase change material provided on an interior side of the vacuum IG unit but not on an exterior side of the vacuum IG unit, the phase change material being supported by the structurally insulated panel.