Which architectural product design innovation, first commercially successful in the 1980s, allowed buildings to have highly transparent facades while maintaining energy efficiency?

Test your knowledge about a revolutionary product design that changed how architects approach building facades. This innovation bridged traditional architecture with sustainable design principles and has become increasingly important in modern construction. The correct answer reveals an important milestone in architectural product development that has influenced countless buildings worldwide.

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Low-emissivity (Low-E) glass
Structural silicone glazing
ETFE (Ethylene tetrafluoroethylene) membrane systems
Self-cleaning photocatalytic glass