According to Hardev, the installed cost of passive curtain wall (industry jargon for an ordinary glass exterior) is on average $100 per square-foot, despite varying considerably.

Passive low-e coatings maximize solar heat gain in a home, while solar control low-e coatings limit the amount of solar heat that seeps into a building. According to energy.gov, low-e windows cost ...

MILGARD Windows and Doors, ... with optional upgrades like Low-E glass and gas between the panes to help reduce energy ... The AX450 Aluminum Moving Glass Wall is available now at MILGARD.com.