Egress window: is one that is sized to allow entry or exit in case of emergency. Sizing requirements are spelled out in the International Residential Code (IRC-2000)

Electrochromic glazing: or switchable glazing, is specially coated and laminated glazing that can be manually or automatically switched from clear to tinted, thus reducing heat gain or providing privacy.

Energy Star: an energy rating system established by the U. S. government. Tax credits are available for improving your home’s energy efficiency, including replacement windows.

Evacuated glazing: double or triple-glazing that has been hermetically sealed with a vacuum in the space between the panes.

Extruded screen frame: a frame pressed through a form or die.

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