| abstract |
A multiple glazed window unit having an electro-conductive coating and bus bars on the enclosed space surface of one of its glass panels is used to reduce condensation, drafts, and room heat loss adjacent to the window when the outside temperature is below that inside. A selective reflecting film on the enclosed space surface of one of the panels improves the heat insulating character of the unit and reduces visible iridescence common to electroconductive films. The selective reflecting film has an absolute infrared reflectance of at least 0.7 and sufficient visible light reflectance for the substantial elimination of visible iridescence. |