Talk:Spandrel glass

History/ "Tempered structural glass was used for wall spandrels for a limited time even though it had a variety of colors and opacities."

Does "even though" mean the colors and opacities were inconsistent, and that's what limited the glass's adoption?

Uses and Installation/ "The term glass box is used to describe buildings that had been erected using spandrel glass with transparent substrates. These were popular after World War II; the best example of a glass box building is the Lever House in New York City. The substrate of this building had an opaque coating of a green hue."

The exemplar doesn't match the type. Is the transparent or the opaque substrate typical?